72343684 has 12 divisors (see below), whose sum is σ = 144687424. Its totient is φ = 31004424.

The previous prime is 72343643. The next prime is 72343693. The reversal of 72343684 is 48634327.

It is a happy number.

72343684 is an admirable number.

It is a super-2 number, since 2×72343684² = 10467217229383712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1291824 + ... + 1291879.

Almost surely, 2^72343684 is an apocalyptic number.

It is an amenable number.

72343684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72343684 is a wasteful number, since it uses less digits than its factorization.

72343684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583714 (or 2583712 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 72343684 is about 8505.5090382646. The cubic root of 72343684 is about 416.6776507682.

The spelling of 72343684 in words is "seventy-two million, three hundred forty-three thousand, six hundred eighty-four".