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157020156 = 223237117883
BaseRepresentation
bin10010101101111…
…10111111111100
3101221110110011100
421112332333330
5310144121111
623325253100
73614435466
oct1126767774
9357413140
10157020156
11806a7627
1244704190
13266b9347
1416bd5136
15dbb9756
hex95beffc

157020156 has 36 divisors (see below), whose sum is σ = 407642872. Its totient is φ = 50925024.

The previous prime is 157020151. The next prime is 157020187. The reversal of 157020156 is 651020751.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157020151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57610 + ... + 60273.

Almost surely, 2157020156 is an apocalyptic number.

It is an amenable number.

157020156 is an abundant number, since it is smaller than the sum of its proper divisors (250622716).

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

157020156 is a wasteful number, since it uses less digits than its factorization.

157020156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117930 (or 117925 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 157020156 is about 12530.7683722907. The cubic root of 157020156 is about 539.4921562923.

The spelling of 157020156 in words is "one hundred fifty-seven million, twenty thousand, one hundred fifty-six".

Divisors: 1 2 3 4 6 9 12 18 36 37 74 111 148 222 333 444 666 1332 117883 235766 353649 471532 707298 1060947 1414596 2121894 4243788 4361671 8723342 13085013 17446684 26170026 39255039 52340052 78510078 157020156