157205020 has 48 divisors (see below), whose sum is σ = 378479808. Its totient is φ = 53729280.

The previous prime is 157205017. The next prime is 157205021. The reversal of 157205020 is 20502751.

It is a junction number, because it is equal to n+sod(n) for n = 157204982 and 157205000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157205021) 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, 47830 + ... + 51010.

It is an arithmetic number, because the mean of its divisors is an integer number (7884996).

Almost surely, 2^157205020 is an apocalyptic number.

157205020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157205020 is an abundant number, since it is smaller than the sum of its proper divisors (221274788).

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

157205020 is a wasteful number, since it uses less digits than its factorization.

157205020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 157205020 is about 12538.1426056653. The cubic root of 157205020 is about 539.7037927403.

Adding to 157205020 its reverse (20502751), we get a palindrome (177707771).

The spelling of 157205020 in words is "one hundred fifty-seven million, two hundred five thousand, twenty".