137917028 has 24 divisors (see below), whose sum is σ = 243983712. Its totient is φ = 68212224.

The previous prime is 137917027. The next prime is 137917037. The reversal of 137917028 is 820719731.

It is a super-2 number, since 2×137917028² = 38042213224705568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137916982 and 137917000.

It is not an unprimeable number, because it can be changed into a prime (137917027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174851 + ... + 175637.

It is an arithmetic number, because the mean of its divisors is an integer number (10165988).

Almost surely, 2^137917028 is an apocalyptic number.

It is an amenable number.

137917028 is a deficient number, since it is larger than the sum of its proper divisors (106066684).

137917028 is a wasteful number, since it uses less digits than its factorization.

137917028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 137917028 is about 11743.8080706388. The cubic root of 137917028 is about 516.6613367932.

The spelling of 137917028 in words is "one hundred thirty-seven million, nine hundred seventeen thousand, twenty-eight".