Search a number
-
+
152021020 = 2257601051
BaseRepresentation
bin10010000111110…
…10100000011100
3101121001110122011
421003322200130
5302404133040
623030201004
73524104654
oct1103724034
9347043564
10152021020
11788a2708
1242ab3164
1325658a88
1416293364
15d52d3ea
hex90fa81c

152021020 has 12 divisors (see below), whose sum is σ = 319244184. Its totient is φ = 60808400.

The previous prime is 152021017. The next prime is 152021081. The reversal of 152021020 is 20120251.

It is a super-2 number, since 2×1520210202 = 46220781043680800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800506 + ... + 3800545.

It is an arithmetic number, because the mean of its divisors is an integer number (26603682).

Almost surely, 2152021020 is an apocalyptic number.

152021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152021020 is an abundant number, since it is smaller than the sum of its proper divisors (167223164).

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

152021020 is a wasteful number, since it uses less digits than its factorization.

152021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601060 (or 7601058 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 152021020 is about 12329.6804500360. The cubic root of 152021020 is about 533.7049294011.

Adding to 152021020 its reverse (20120251), we get a palindrome (172141271).

The spelling of 152021020 in words is "one hundred fifty-two million, twenty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 7601051 15202102 30404204 38005255 76010510 152021020