157621020 has 48 divisors (see below), whose sum is σ = 442810368. Its totient is φ = 41892160.

The previous prime is 157621007. The next prime is 157621039. The reversal of 157621020 is 20126751.

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 15 ways as a sum of consecutive naturals, for example, 14437 + ... + 22883.

It is an arithmetic number, because the mean of its divisors is an integer number (9225216).

Almost surely, 2^157621020 is an apocalyptic number.

157621020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157621020 is an abundant number, since it is smaller than the sum of its proper divisors (285189348).

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

157621020 is a wasteful number, since it uses less digits than its factorization.

157621020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770 (or 8768 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 157621020 is about 12554.7210243796. The cubic root of 157621020 is about 540.1794328263.

Adding to 157621020 its reverse (20126751), we get a palindrome (177747771).

The spelling of 157621020 in words is "one hundred fifty-seven million, six hundred twenty-one thousand, twenty".