137288238 has 16 divisors (see below), whose sum is σ = 275788800. Its totient is φ = 45560696.

The previous prime is 137288237. The next prime is 137288257. The reversal of 137288238 is 832882731.

137288238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 137288238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137288231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49038 + ... + 51761.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^137288238 is an apocalyptic number.

137288238 is an abundant number, since it is smaller than the sum of its proper divisors (138500562).

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

137288238 is a wasteful number, since it uses less digits than its factorization.

137288238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101031.

The product of its digits is 129024, while the sum is 42.

The square root of 137288238 is about 11717.0063582811. The cubic root of 137288238 is about 515.8749546763.

The spelling of 137288238 in words is "one hundred thirty-seven million, two hundred eighty-eight thousand, two hundred thirty-eight".