128364736 has 28 divisors (see below), whose sum is σ = 255125728. Its totient is φ = 64081152.

The previous prime is 128364721. The next prime is 128364763. The reversal of 128364736 is 637463821.

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, 54985 + ... + 57271.

Almost surely, 2^128364736 is an apocalyptic number.

128364736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128364736 is a deficient number, since it is larger than the sum of its proper divisors (126760992).

128364736 is an equidigital number, since it uses as much as digits as its factorization.

128364736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176 (or 3166 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 128364736 is about 11329.8162385804. The cubic root of 128364736 is about 504.4466520087.

The spelling of 128364736 in words is "one hundred twenty-eight million, three hundred sixty-four thousand, seven hundred thirty-six".