72326880 has 72 divisors (see below), whose sum is σ = 246820392. Its totient is φ = 19286784.

The previous prime is 72326879. The next prime is 72326887. The reversal of 72326880 is 8862327.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72326887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23674 + ... + 26553.

It is an arithmetic number, because the mean of its divisors is an integer number (3428061).

Almost surely, 2^72326880 is an apocalyptic number.

It is an amenable number.

72326880 is an abundant number, since it is smaller than the sum of its proper divisors (174493512).

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

72326880 is a wasteful number, since it uses less digits than its factorization.

72326880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50248 (or 50237 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72326880 is about 8504.5211505410. The cubic root of 72326880 is about 416.6453862909.

The spelling of 72326880 in words is "seventy-two million, three hundred twenty-six thousand, eight hundred eighty".