72204144 has 40 divisors (see below), whose sum is σ = 186868992. Its totient is φ = 24024000.

The previous prime is 72204109. The next prime is 72204149. The reversal of 72204144 is 44140227.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204149) 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, 35047 + ... + 37049.

Almost surely, 2^72204144 is an apocalyptic number.

It is an amenable number.

72204144 is an abundant number, since it is smaller than the sum of its proper divisors (114664848).

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

72204144 is a wasteful number, since it uses less digits than its factorization.

72204144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 72204144 is about 8497.3021600976. The cubic root of 72204144 is about 416.4095756605.

The spelling of 72204144 in words is "seventy-two million, two hundred four thousand, one hundred forty-four".