72563898 has 32 divisors (see below), whose sum is σ = 160500672. Its totient is φ = 21686400.

The previous prime is 72563893. The next prime is 72563903. The reversal of 72563898 is 89836527.

It is an interprime number because it is at equal distance from previous prime (72563893) and next prime (72563903).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72563893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2713 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (5015646).

Almost surely, 2^72563898 is an apocalyptic number.

72563898 is an abundant number, since it is smaller than the sum of its proper divisors (87936774).

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

72563898 is a wasteful number, since it uses less digits than its factorization.

72563898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15150.

The product of its digits is 725760, while the sum is 48.

The square root of 72563898 is about 8518.4445763296. Note that the first 3 decimals coincide. The cubic root of 72563898 is about 417.1000110918.

The spelling of 72563898 in words is "seventy-two million, five hundred sixty-three thousand, eight hundred ninety-eight".