137020290 has 32 divisors (see below), whose sum is σ = 358744896. Its totient is φ = 33216960.

The previous prime is 137020283. The next prime is 137020291. The reversal of 137020290 is 92020731.

It is a self number, because there is not a number n which added to its sum of digits gives 137020290.

It is not an unprimeable number, because it can be changed into a prime (137020291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207277 + ... + 207936.

It is an arithmetic number, because the mean of its divisors is an integer number (11210778).

Almost surely, 2^137020290 is an apocalyptic number.

137020290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137020290 is an abundant number, since it is smaller than the sum of its proper divisors (221724606).

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

137020290 is a wasteful number, since it uses less digits than its factorization.

137020290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415234.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 137020290 is about 11705.5666244740. The cubic root of 137020290 is about 515.5391218593.

The spelling of 137020290 in words is "one hundred thirty-seven million, twenty thousand, two hundred ninety".