72073988 has 12 divisors (see below), whose sum is σ = 144148032. Its totient is φ = 30888840.

The previous prime is 72073979. The next prime is 72073993. The reversal of 72073988 is 88937027.

It is a happy number.

72073988 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287008 + ... + 1287063.

It is an arithmetic number, because the mean of its divisors is an integer number (12012336).

Almost surely, 2^72073988 is an apocalyptic number.

It is an amenable number.

72073988 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.

72073988 is a wasteful number, since it uses less digits than its factorization.

72073988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574082 (or 2574080 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 72073988 is about 8489.6400394834. The cubic root of 72073988 is about 416.1592169762.

The spelling of 72073988 in words is "seventy-two million, seventy-three thousand, nine hundred eighty-eight".