328737018240 has 128 divisors (see below), whose sum is σ = 1164277000800. Its totient is φ = 87663200256.

The previous prime is 328737018227. The next prime is 328737018257. The reversal of 328737018240 is 42810737823.

328737018240 is a `hidden beast` number, since 3 + 28 + 7 + 370 + 18 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×328737018240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9494787 + ... + 9529346.

Almost surely, 2^328737018240 is an apocalyptic number.

328737018240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328737018240 is an abundant number, since it is smaller than the sum of its proper divisors (835539982560).

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

328737018240 is a wasteful number, since it uses less digits than its factorization.

328737018240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19024161 (or 19024143 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 328737018240 in words is "three hundred twenty-eight billion, seven hundred thirty-seven million, eighteen thousand, two hundred forty".