136239672 has 32 divisors (see below), whose sum is σ = 355409280. Its totient is φ = 43438560.

The previous prime is 136239659. The next prime is 136239689. The reversal of 136239672 is 276932631.

It is a super-2 number, since 2×136239672² = 37122496453335168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136239672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122854 + ... + 123957.

It is an arithmetic number, because the mean of its divisors is an integer number (11106540).

Almost surely, 2^136239672 is an apocalyptic number.

136239672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136239672 is an abundant number, since it is smaller than the sum of its proper divisors (219169608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136239672 is a wasteful number, since it uses less digits than its factorization.

136239672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246843 (or 246839 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 136239672 is about 11672.1751186315. The cubic root of 136239672 is about 514.5582311427.

The spelling of 136239672 in words is "one hundred thirty-six million, two hundred thirty-nine thousand, six hundred seventy-two".