136974388 has 6 divisors (see below), whose sum is σ = 239705186. Its totient is φ = 68487192.

The previous prime is 136974377. The next prime is 136974391. The reversal of 136974388 is 883479631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 116380944 + 20593444 = 10788^2 + 4538^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17121795 + ... + 17121802.

Almost surely, 2^136974388 is an apocalyptic number.

It is an amenable number.

136974388 is a deficient number, since it is larger than the sum of its proper divisors (102730798).

136974388 is a wasteful number, since it uses less digits than its factorization.

136974388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34243601 (or 34243599 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 136974388 is about 11703.6057691636. The cubic root of 136974388 is about 515.4815466399.

It can be divided in two parts, 1369 and 74388, that added together give a palindrome (75757).

The spelling of 136974388 in words is "one hundred thirty-six million, nine hundred seventy-four thousand, three hundred eighty-eight".