136213776 has 30 divisors (see below), whose sum is σ = 381209790. Its totient is φ = 45404544.

The previous prime is 136213771. The next prime is 136213787. The reversal of 136213776 is 677312631.

It can be written as a sum of positive squares in only one way, i.e., 96825600 + 39388176 = 9840^2 + 6276^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 136213776.

It is not an unprimeable number, because it can be changed into a prime (136213771) 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 5 ways as a sum of consecutive naturals, for example, 472821 + ... + 473108.

It is an arithmetic number, because the mean of its divisors is an integer number (12706993).

Almost surely, 2^136213776 is an apocalyptic number.

136213776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136213776 is an abundant number, since it is smaller than the sum of its proper divisors (244996014).

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

136213776 is a wasteful number, since it uses less digits than its factorization.

136213776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945943 (or 945934 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 136213776 is about 11671.0657611034. The cubic root of 136213776 is about 514.5256272173.

The spelling of 136213776 in words is "one hundred thirty-six million, two hundred thirteen thousand, seven hundred seventy-six".