137147720 has 32 divisors (see below), whose sum is σ = 318539520. Its totient is φ = 53088960.

The previous prime is 137147701. The next prime is 137147749. The reversal of 137147720 is 27741731.

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, 54062 + ... + 56541.

It is an arithmetic number, because the mean of its divisors is an integer number (9954360).

Almost surely, 2^137147720 is an apocalyptic number.

137147720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137147720 is an abundant number, since it is smaller than the sum of its proper divisors (181391800).

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

137147720 is a wasteful number, since it uses less digits than its factorization.

137147720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110645 (or 110641 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 137147720 is about 11711.0084962825. The cubic root of 137147720 is about 515.6988908860.

The spelling of 137147720 in words is "one hundred thirty-seven million, one hundred forty-seven thousand, seven hundred twenty".