137872456 has 8 divisors (see below), whose sum is σ = 258510870. Its totient is φ = 68936224.

The previous prime is 137872447. The next prime is 137872457. The reversal of 137872456 is 654278731.

It can be written as a sum of positive squares in only one way, i.e., 118069956 + 19802500 = 10866^2 + 4450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (137872457) 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 as a sum of consecutive naturals, namely, 8617021 + ... + 8617036.

Almost surely, 2^137872456 is an apocalyptic number.

It is an amenable number.

137872456 is a deficient number, since it is larger than the sum of its proper divisors (120638414).

137872456 is a wasteful number, since it uses less digits than its factorization.

137872456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17234063 (or 17234059 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 137872456 is about 11741.9102364138. The cubic root of 137872456 is about 516.6056726240.

The spelling of 137872456 in words is "one hundred thirty-seven million, eight hundred seventy-two thousand, four hundred fifty-six".