137720456 has 32 divisors (see below), whose sum is σ = 261835200. Its totient is φ = 67905600.

The previous prime is 137720419. The next prime is 137720477. The reversal of 137720456 is 654027731.

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 7 ways as a sum of consecutive naturals, for example, 208655 + ... + 209313.

It is an arithmetic number, because the mean of its divisors is an integer number (8182350).

Almost surely, 2^137720456 is an apocalyptic number.

It is an amenable number.

137720456 is a deficient number, since it is larger than the sum of its proper divisors (124114744).

137720456 is a wasteful number, since it uses less digits than its factorization.

137720456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 137720456 is about 11735.4359100972. The cubic root of 137720456 is about 516.4157557038.

The spelling of 137720456 in words is "one hundred thirty-seven million, seven hundred twenty thousand, four hundred fifty-six".