137973980 has 24 divisors (see below), whose sum is σ = 290154480. Its totient is φ = 55111680.

The previous prime is 137973973. The next prime is 137974013. The reversal of 137973980 is 89379731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10895 + ... + 19865.

It is an arithmetic number, because the mean of its divisors is an integer number (12089770).

Almost surely, 2^137973980 is an apocalyptic number.

137973980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137973980 is an abundant number, since it is smaller than the sum of its proper divisors (152180500).

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

137973980 is a wasteful number, since it uses less digits than its factorization.

137973980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9749 (or 9747 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 137973980 is about 11746.2325875150. The cubic root of 137973980 is about 516.7324443945.

The spelling of 137973980 in words is "one hundred thirty-seven million, nine hundred seventy-three thousand, nine hundred eighty".