72881244 has 36 divisors (see below), whose sum is σ = 195066144. Its totient is φ = 22864512.

The previous prime is 72881233. The next prime is 72881309. The reversal of 72881244 is 44218827.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 72881199 and 72881208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58932 + ... + 60155.

It is an arithmetic number, because the mean of its divisors is an integer number (5418504).

Almost surely, 2^72881244 is an apocalyptic number.

It is an amenable number.

72881244 is an abundant number, since it is smaller than the sum of its proper divisors (122184900).

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

72881244 is a wasteful number, since it uses less digits than its factorization.

72881244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119114 (or 119109 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 72881244 is about 8537.0512473570. The cubic root of 72881244 is about 417.7071657628.

The spelling of 72881244 in words is "seventy-two million, eight hundred eighty-one thousand, two hundred forty-four".