137688250 has 128 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 43200000.

The previous prime is 137688227. The next prime is 137688277. The reversal of 137688250 is 52886731.

137688250 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1363200 + ... + 1363300.

It is an arithmetic number, because the mean of its divisors is an integer number (2506140).

Almost surely, 2^137688250 is an apocalyptic number.

137688250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137688250 is an abundant number, since it is smaller than the sum of its proper divisors (183097670).

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

137688250 is a wasteful number, since it uses less digits than its factorization.

137688250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 137688250 is about 11734.0636609829. The cubic root of 137688250 is about 516.3754978682.

The spelling of 137688250 in words is "one hundred thirty-seven million, six hundred eighty-eight thousand, two hundred fifty".