157850172 has 18 divisors (see below), whose sum is σ = 399010248. Its totient is φ = 52616712.

The previous prime is 157850159. The next prime is 157850201. The reversal of 157850172 is 271058751.

157850172 is a `hidden beast` number, since 15 + 78 + 501 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4384727 = 157850172 / (1 + 5 + 7 + 8 + 5 + 0 + 1 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2192328 + ... + 2192399.

It is an arithmetic number, because the mean of its divisors is an integer number (22167236).

Almost surely, 2^157850172 is an apocalyptic number.

157850172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157850172 is an abundant number, since it is smaller than the sum of its proper divisors (241160076).

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

157850172 is a wasteful number, since it uses less digits than its factorization.

157850172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384737 (or 4384732 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 157850172 is about 12563.8438385711. The cubic root of 157850172 is about 540.4410799505.

The spelling of 157850172 in words is "one hundred fifty-seven million, eight hundred fifty thousand, one hundred seventy-two".