157320044 has 12 divisors (see below), whose sum is σ = 314640144. Its totient is φ = 67422864.

The previous prime is 157320029. The next prime is 157320073. The reversal of 157320044 is 440023751.

157320044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 157319995 and 157320022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2809259 + ... + 2809314.

It is an arithmetic number, because the mean of its divisors is an integer number (26220012).

Almost surely, 2^157320044 is an apocalyptic number.

157320044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

157320044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

157320044 is a wasteful number, since it uses less digits than its factorization.

157320044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618584 (or 5618582 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 157320044 is about 12542.7287302245. The cubic root of 157320044 is about 539.8353910708.

Adding to 157320044 its reverse (440023751), we get a palindrome (597343795).

The spelling of 157320044 in words is "one hundred fifty-seven million, three hundred twenty thousand, forty-four".