157205628 has 18 divisors (see below), whose sum is σ = 397380984. Its totient is φ = 52401864.

The previous prime is 157205627. The next prime is 157205663. The reversal of 157205628 is 826502751.

It is a happy number.

157205628 is a `hidden beast` number, since 1 + 5 + 7 + 20 + 5 + 628 = 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: 4366823 = 157205628 / (1 + 5 + 7 + 2 + 0 + 5 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 157205592 and 157205601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157205623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2183376 + ... + 2183447.

Almost surely, 2^157205628 is an apocalyptic number.

157205628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

157205628 is an abundant number, since it is smaller than the sum of its proper divisors (240175356).

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

157205628 is a wasteful number, since it uses less digits than its factorization.

157205628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366833 (or 4366828 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 157205628 is about 12538.1668516574. The cubic root of 157205628 is about 539.7044885185.

The spelling of 157205628 in words is "one hundred fifty-seven million, two hundred five thousand, six hundred twenty-eight".