3136818728 has 32 divisors (see below), whose sum is σ = 6013526400. Its totient is φ = 1533288192.

The previous prime is 3136818703. The next prime is 3136818749. The reversal of 3136818728 is 8278186313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363083 + ... + 371621.

It is an arithmetic number, because the mean of its divisors is an integer number (187922700).

Almost surely, 2^3136818728 is an apocalyptic number.

It is an amenable number.

3136818728 is a deficient number, since it is larger than the sum of its proper divisors (2876707672).

3136818728 is a wasteful number, since it uses less digits than its factorization.

3136818728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9569 (or 9565 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 3136818728 is about 56007.3095943735. The cubic root of 3136818728 is about 1463.8496528595.

The spelling of 3136818728 in words is "three billion, one hundred thirty-six million, eight hundred eighteen thousand, seven hundred twenty-eight".