72446860 has 24 divisors (see below), whose sum is σ = 161088480. Its totient is φ = 27273984.

The previous prime is 72446837. The next prime is 72446861. The reversal of 72446860 is 6864427.

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 not an unprimeable number, because it can be changed into a prime (72446861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106200 + ... + 106879.

It is an arithmetic number, because the mean of its divisors is an integer number (6712020).

Almost surely, 2^72446860 is an apocalyptic number.

It is an amenable number.

72446860 is an abundant number, since it is smaller than the sum of its proper divisors (88641620).

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

72446860 is a wasteful number, since it uses less digits than its factorization.

72446860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213105 (or 213103 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 72446860 is about 8511.5721227045. The cubic root of 72446860 is about 416.8756441484.

The spelling of 72446860 in words is "seventy-two million, four hundred forty-six thousand, eight hundred sixty".