137693720 has 16 divisors (see below), whose sum is σ = 309810960. Its totient is φ = 55077472.

The previous prime is 137693719. The next prime is 137693753. The reversal of 137693720 is 27396731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721132 + ... + 1721211.

It is an arithmetic number, because the mean of its divisors is an integer number (19363185).

Almost surely, 2^137693720 is an apocalyptic number.

137693720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137693720 is an abundant number, since it is smaller than the sum of its proper divisors (172117240).

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

137693720 is a wasteful number, since it uses less digits than its factorization.

137693720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442354 (or 3442350 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 137693720 is about 11734.2967407510. The cubic root of 137693720 is about 516.3823358677.

The spelling of 137693720 in words is "one hundred thirty-seven million, six hundred ninety-three thousand, seven hundred twenty".