72241930 has 32 divisors (see below), whose sum is σ = 132295680. Its totient is φ = 28399680.

The previous prime is 72241909. The next prime is 72241931. The reversal of 72241930 is 3914227.

It is not an unprimeable number, because it can be changed into a prime (72241931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208017 + ... + 208363.

It is an arithmetic number, because the mean of its divisors is an integer number (4134240).

Almost surely, 2^72241930 is an apocalyptic number.

72241930 is the 6940-th pentagonal number.

72241930 is a deficient number, since it is larger than the sum of its proper divisors (60053750).

72241930 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (72241929) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (654).

72241930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 72241930 is about 8499.5252808613. The cubic root of 72241930 is about 416.4822017243.

The spelling of 72241930 in words is "seventy-two million, two hundred forty-one thousand, nine hundred thirty".