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157928 = 23191039
BaseRepresentation
bin100110100011101000
322000122012
4212203220
520023203
63215052
71225301
oct464350
9260565
10157928
11a8721
1277488
1356b64
14417a8
1531bd8
hex268e8

157928 has 16 divisors (see below), whose sum is σ = 312000. Its totient is φ = 74736.

The previous prime is 157907. The next prime is 157931. The reversal of 157928 is 829751.

157928 = 222 + 232 + ... + 782.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 157894 and 157903.

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, 368 + ... + 671.

It is an arithmetic number, because the mean of its divisors is an integer number (19500).

2157928 is an apocalyptic number.

It is an amenable number.

157928 is a deficient number, since it is larger than the sum of its proper divisors (154072).

157928 is a wasteful number, since it uses less digits than its factorization.

157928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1060 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 157928 is about 397.4015601379. The cubic root of 157928 is about 54.0529886817.

The spelling of 157928 in words is "one hundred fifty-seven thousand, nine hundred twenty-eight".

Divisors: 1 2 4 8 19 38 76 152 1039 2078 4156 8312 19741 39482 78964 157928