136788388 has 12 divisors (see below), whose sum is σ = 261141552. Its totient is φ = 62176520.

The previous prime is 136788367. The next prime is 136788403. The reversal of 136788388 is 883887631.

It is a super-2 number, since 2×136788388² = 37422126183277088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554370 + ... + 1554457.

It is an arithmetic number, because the mean of its divisors is an integer number (21761796).

Almost surely, 2^136788388 is an apocalyptic number.

It is an amenable number.

136788388 is a deficient number, since it is larger than the sum of its proper divisors (124353164).

136788388 is a wasteful number, since it uses less digits than its factorization.

136788388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108842 (or 3108840 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 136788388 is about 11695.6568007103. The cubic root of 136788388 is about 515.2481137071.

The spelling of 136788388 in words is "one hundred thirty-six million, seven hundred eighty-eight thousand, three hundred eighty-eight".