72174732 has 24 divisors (see below), whose sum is σ = 192466176. Its totient is φ = 20621328.

The previous prime is 72174731. The next prime is 72174737. The reversal of 72174732 is 23747127.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 72174693 and 72174702.

It is not an unprimeable number, because it can be changed into a prime (72174731) 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 7 ways as a sum of consecutive naturals, for example, 429528 + ... + 429695.

It is an arithmetic number, because the mean of its divisors is an integer number (8019424).

Almost surely, 2^72174732 is an apocalyptic number.

It is an amenable number.

72174732 is an abundant number, since it is smaller than the sum of its proper divisors (120291444).

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

72174732 is a wasteful number, since it uses less digits than its factorization.

72174732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859237 (or 859235 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 72174732 is about 8495.5713168686. The cubic root of 72174732 is about 416.3530271897.

The spelling of 72174732 in words is "seventy-two million, one hundred seventy-four thousand, seven hundred thirty-two".