137318228 has 12 divisors (see below), whose sum is σ = 240551220. Its totient is φ = 68589312.

The previous prime is 137318227. The next prime is 137318267. The reversal of 137318228 is 822813731.

137318228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56821444 + 80496784 = 7538^2 + 8972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137318227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12893 + ... + 20996.

It is an arithmetic number, because the mean of its divisors is an integer number (20045935).

Almost surely, 2^137318228 is an apocalyptic number.

It is an amenable number.

137318228 is a deficient number, since it is larger than the sum of its proper divisors (103232992).

137318228 is a wasteful number, since it uses less digits than its factorization.

137318228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34906 (or 34904 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 137318228 is about 11718.2860521494. The cubic root of 137318228 is about 515.9125154650.

The spelling of 137318228 in words is "one hundred thirty-seven million, three hundred eighteen thousand, two hundred twenty-eight".