332173728 has 72 divisors (see below), whose sum is σ = 985709088. Its totient is φ = 105908352.

The previous prime is 332173703. The next prime is 332173729. The reversal of 332173728 is 827371233.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×332173728² = 220678771146835968, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 332173692 and 332173701.

It is not an unprimeable number, because it can be changed into a prime (332173729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18450 + ... + 31697.

It is an arithmetic number, because the mean of its divisors is an integer number (13690404).

Almost surely, 2^332173728 is an apocalyptic number.

It is an amenable number.

332173728 is an abundant number, since it is smaller than the sum of its proper divisors (653535360).

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

332173728 is a wasteful number, since it uses less digits than its factorization.

332173728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50186 (or 50175 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 332173728 is about 18225.6338161393. The cubic root of 332173728 is about 692.5563147607.

The spelling of 332173728 in words is "three hundred thirty-two million, one hundred seventy-three thousand, seven hundred twenty-eight".