157999356 has 24 divisors (see below), whose sum is σ = 409628240. Its totient is φ = 52666416.

The previous prime is 157999339. The next prime is 157999357. The reversal of 157999356 is 653999751.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157999357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731371 + ... + 731586.

Almost surely, 2^157999356 is an apocalyptic number.

It is an amenable number.

157999356 is an abundant number, since it is smaller than the sum of its proper divisors (251628884).

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

157999356 is a wasteful number, since it uses less digits than its factorization.

157999356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462970 (or 1462962 counting only the distinct ones).

The product of its digits is 2296350, while the sum is 54.

The square root of 157999356 is about 12569.7794730059. The cubic root of 157999356 is about 540.6112830716.

It can be divided in two parts, 1579993 and 56, that added together give a square (1580049 = 1257²).

The spelling of 157999356 in words is "one hundred fifty-seven million, nine hundred ninety-nine thousand, three hundred fifty-six".