72474012 has 72 divisors (see below), whose sum is σ = 205898784. Its totient is φ = 21326976.

The previous prime is 72473981. The next prime is 72474013. The reversal of 72474012 is 21047427.

It is a happy number.

It is a super-2 number, since 2×72474012² = 10504964830752288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72474013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7398 + ... + 14130.

Almost surely, 2^72474012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72474012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102949392).

72474012 is an abundant number, since it is smaller than the sum of its proper divisors (133424772).

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

72474012 is a wasteful number, since it uses less digits than its factorization.

72474012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779 (or 6774 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 72474012 is about 8513.1669782755. The cubic root of 72474012 is about 416.9277172299.

The spelling of 72474012 in words is "seventy-two million, four hundred seventy-four thousand, twelve".