157320873 has 24 divisors (see below), whose sum is σ = 249526368. Its totient is φ = 98708544.

The previous prime is 157320871. The next prime is 157320883. The reversal of 157320873 is 378023751.

157320873 is a `hidden beast` number, since 1 + 573 + 2 + 0 + 87 + 3 = 666.

It is not a de Polignac number, because 157320873 - 2¹ = 157320871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157320871) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 14911 + ... + 23172.

It is an arithmetic number, because the mean of its divisors is an integer number (10396932).

Almost surely, 2^157320873 is an apocalyptic number.

It is an amenable number.

157320873 is a deficient number, since it is larger than the sum of its proper divisors (92205495).

157320873 is an equidigital number, since it uses as much as digits as its factorization.

157320873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38115 (or 38103 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 157320873 is about 12542.7617772164. The cubic root of 157320873 is about 539.8363392924.

The spelling of 157320873 in words is "one hundred fifty-seven million, three hundred twenty thousand, eight hundred seventy-three".