137428650 has 72 divisors (see below), whose sum is σ = 382933824. Its totient is φ = 36644400.

The previous prime is 137428639. The next prime is 137428667. The reversal of 137428650 is 56824731.

137428650 is a `hidden beast` number, since 1 + 374 + 286 + 5 + 0 = 666.

137428650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6495 + ... + 17805.

Almost surely, 2^137428650 is an apocalyptic number.

137428650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 137428650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191466912).

137428650 is an abundant number, since it is smaller than the sum of its proper divisors (245505174).

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

137428650 is a wasteful number, since it uses less digits than its factorization.

137428650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338 (or 11321 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 137428650 is about 11722.9966305548. The cubic root of 137428650 is about 516.0507656922.

The spelling of 137428650 in words is "one hundred thirty-seven million, four hundred twenty-eight thousand, six hundred fifty".