72296328 has 32 divisors (see below), whose sum is σ = 194644800. Its totient is φ = 22244928.

The previous prime is 72296317. The next prime is 72296339. The reversal of 72296328 is 82369227.

It is an interprime number because it is at equal distance from previous prime (72296317) and next prime (72296339).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115548 + ... + 116171.

It is an arithmetic number, because the mean of its divisors is an integer number (6082650).

Almost surely, 2^72296328 is an apocalyptic number.

72296328 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

72296328 is an abundant number, since it is smaller than the sum of its proper divisors (122348472).

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

72296328 is a wasteful number, since it uses less digits than its factorization.

72296328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231741 (or 231737 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 72296328 is about 8502.7247397525. The cubic root of 72296328 is about 416.5867121962.

The spelling of 72296328 in words is "seventy-two million, two hundred ninety-six thousand, three hundred twenty-eight".