136388930 has 16 divisors (see below), whose sum is σ = 246859704. Its totient is φ = 54253440.

The previous prime is 136388899. The next prime is 136388951. The reversal of 136388930 is 39883631.

It can be written as a sum of positive squares in 4 ways, for example, as 99580441 + 36808489 = 9979^2 + 6067^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35867 + ... + 39486.

Almost surely, 2^136388930 is an apocalyptic number.

136388930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136388930 is a deficient number, since it is larger than the sum of its proper divisors (110470774).

136388930 is a wasteful number, since it uses less digits than its factorization.

136388930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75541.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 136388930 is about 11678.5671210127. The cubic root of 136388930 is about 514.7460714428.

The spelling of 136388930 in words is "one hundred thirty-six million, three hundred eighty-eight thousand, nine hundred thirty".