72699012 has 48 divisors (see below), whose sum is σ = 189571200. Its totient is φ = 24092640.

The previous prime is 72698981. The next prime is 72699013. The reversal of 72699012 is 21099627.

It is a super-2 number, since 2×72699012² = 10570292691552288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72699013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17689 + ... + 21407.

It is an arithmetic number, because the mean of its divisors is an integer number (3949400).

Almost surely, 2^72699012 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 72699012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94785600).

72699012 is an abundant number, since it is smaller than the sum of its proper divisors (116872188).

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

72699012 is a wasteful number, since it uses less digits than its factorization.

72699012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 72699012 is about 8526.3715612211. The cubic root of 72699012 is about 417.3587306951.

The spelling of 72699012 in words is "seventy-two million, six hundred ninety-nine thousand, twelve".