72440652 has 12 divisors (see below), whose sum is σ = 169028216. Its totient is φ = 24146880.

The previous prime is 72440651. The next prime is 72440653. The reversal of 72440652 is 25604427.

It is an interprime number because it is at equal distance from previous prime (72440651) and next prime (72440653).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72440651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018349 + ... + 3018372.

Almost surely, 2^72440652 is an apocalyptic number.

It is an amenable number.

72440652 is an abundant number, since it is smaller than the sum of its proper divisors (96587564).

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

72440652 is a wasteful number, since it uses less digits than its factorization.

72440652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6036728 (or 6036726 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 72440652 is about 8511.2074349060. The cubic root of 72440652 is about 416.8637363955.

The spelling of 72440652 in words is "seventy-two million, four hundred forty thousand, six hundred fifty-two".