72398430 has 48 divisors (see below), whose sum is σ = 202718880. Its totient is φ = 17820864.

The previous prime is 72398429. The next prime is 72398437. The reversal of 72398430 is 3489327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72398437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29770 + ... + 32109.

It is an arithmetic number, because the mean of its divisors is an integer number (4223310).

Almost surely, 2^72398430 is an apocalyptic number.

72398430 is an abundant number, since it is smaller than the sum of its proper divisors (130320450).

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

72398430 is a wasteful number, since it uses less digits than its factorization.

72398430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61905 (or 61902 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 72398430 is about 8508.7266967508. The cubic root of 72398430 is about 416.7827310445.

The spelling of 72398430 in words is "seventy-two million, three hundred ninety-eight thousand, four hundred thirty".