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145647796 = 22723123971
BaseRepresentation
bin10001010111001…
…10100010110100
3101011001200012211
420223212202310
5244241212141
622241423204
73415662100
oct1053464264
9334050184
10145647796
117523a388
124093ab04
1324236c38
14154b4900
15cbbed81
hex8ae68b4

145647796 has 36 divisors (see below), whose sum is σ = 306074496. Its totient is φ = 60404400.

The previous prime is 145647793. The next prime is 145647899. The reversal of 145647796 is 697746541.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145647793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5910 + ... + 18061.

Almost surely, 2145647796 is an apocalyptic number.

It is an amenable number.

145647796 is an abundant number, since it is smaller than the sum of its proper divisors (160426700).

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

145647796 is a wasteful number, since it uses less digits than its factorization.

145647796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020 (or 24011 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 145647796 is about 12068.4628681535. The cubic root of 145647796 is about 526.1399821167.

The spelling of 145647796 in words is "one hundred forty-five million, six hundred forty-seven thousand, seven hundred ninety-six".

Divisors: 1 2 4 7 14 28 31 49 62 98 124 196 217 434 868 1519 3038 6076 23971 47942 95884 167797 335594 671188 743101 1174579 1486202 2349158 2972404 4698316 5201707 10403414 20806828 36411949 72823898 145647796