72140579 has 16 divisors (see below), whose sum is σ = 84397248. Its totient is φ = 60383232.

The previous prime is 72140557. The next prime is 72140591. The reversal of 72140579 is 97504127.

It is not a de Polignac number, because 72140579 - 2⁸ = 72140323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72140599) 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, 124739 + ... + 125315.

It is an arithmetic number, because the mean of its divisors is an integer number (5274828).

Almost surely, 2^72140579 is an apocalyptic number.

72140579 is a deficient number, since it is larger than the sum of its proper divisors (12256669).

72140579 is a wasteful number, since it uses less digits than its factorization.

72140579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 72140579 is about 8493.5610317463. The cubic root of 72140579 is about 416.2873442374.

The spelling of 72140579 in words is "seventy-two million, one hundred forty thousand, five hundred seventy-nine".