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152668980 = 223254491889
BaseRepresentation
bin10010001100110…
…00101100110100
3101122021101110200
421012120230310
5303040401410
623052120500
73532444032
oct1106305464
9348241420
10152668980
11791a5512
1243166130
1325824999
14163c1552
15d60a3c0
hex9198b34

152668980 has 72 divisors (see below), whose sum is σ = 464373000. Its totient is φ = 40599552.

The previous prime is 152668939. The next prime is 152668981. The reversal of 152668980 is 89866251.

It can be written as a sum of positive squares in 4 ways, for example, as 19820304 + 132848676 = 4452^2 + 11526^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152668981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79876 + ... + 81764.

It is an arithmetic number, because the mean of its divisors is an integer number (6449625).

Almost surely, 2152668980 is an apocalyptic number.

152668980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 152668980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232186500).

152668980 is an abundant number, since it is smaller than the sum of its proper divisors (311704020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

152668980 is a wasteful number, since it uses less digits than its factorization.

152668980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353 (or 2348 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 152668980 is about 12355.9289412007. The cubic root of 152668980 is about 534.4621257345.

The spelling of 152668980 in words is "one hundred fifty-two million, six hundred sixty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 449 898 1347 1796 1889 2245 2694 3778 4041 4490 5388 5667 6735 7556 8082 8980 9445 11334 13470 16164 17001 18890 20205 22668 26940 28335 34002 37780 40410 56670 68004 80820 85005 113340 170010 340020 848161 1696322 2544483 3392644 4240805 5088966 7633449 8481610 10177932 12722415 15266898 16963220 25444830 30533796 38167245 50889660 76334490 152668980