157902220 has 48 divisors (see below), whose sum is σ = 391200768. Its totient is φ = 52390080.

The previous prime is 157902209. The next prime is 157902229. The reversal of 157902220 is 22209751.

It is a super-2 number, since 2×157902220² = 49866222161856800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (157902229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13852 + ... + 22531.

It is an arithmetic number, because the mean of its divisors is an integer number (8150016).

Almost surely, 2^157902220 is an apocalyptic number.

157902220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157902220 is an abundant number, since it is smaller than the sum of its proper divisors (233298548).

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

157902220 is a wasteful number, since it uses less digits than its factorization.

157902220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36430 (or 36428 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 157902220 is about 12565.9150084664. The cubic root of 157902220 is about 540.5004733738.

157902220 divided by its sum of digits (28) gives a palindrome (5639365).

The spelling of 157902220 in words is "one hundred fifty-seven million, nine hundred two thousand, two hundred twenty".