72081459 has 24 divisors (see below), whose sum is σ = 112157760. Its totient is φ = 44461872.

The previous prime is 72081437. The next prime is 72081461. The reversal of 72081459 is 95418027.

It is not a de Polignac number, because 72081459 - 2⁸ = 72081203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72081419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2452 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (4673240).

Almost surely, 2^72081459 is an apocalyptic number.

72081459 is a deficient number, since it is larger than the sum of its proper divisors (40076301).

72081459 is a wasteful number, since it uses less digits than its factorization.

72081459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871 (or 9868 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 72081459 is about 8490.0800349584. The cubic root of 72081459 is about 416.1735958026.

The spelling of 72081459 in words is "seventy-two million, eighty-one thousand, four hundred fifty-nine".