72831930 has 16 divisors (see below), whose sum is σ = 174796704. Its totient is φ = 19421840.

The previous prime is 72831923. The next prime is 72831931. The reversal of 72831930 is 3913827.

It is a super-4 number, since 4×72831930⁴ (a number of 33 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72831891 and 72831900.

It is not an unprimeable number, because it can be changed into a prime (72831931) 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, 1213836 + ... + 1213895.

It is an arithmetic number, because the mean of its divisors is an integer number (10924794).

Almost surely, 2^72831930 is an apocalyptic number.

72831930 is an abundant number, since it is smaller than the sum of its proper divisors (101964774).

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

72831930 is a wasteful number, since it uses less digits than its factorization.

72831930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427741.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 72831930 is about 8534.1625248175. The cubic root of 72831930 is about 417.6129327442.

The spelling of 72831930 in words is "seventy-two million, eight hundred thirty-one thousand, nine hundred thirty".