72015411 has 16 divisors (see below), whose sum is σ = 105814016. Its totient is φ = 43285536.

The previous prime is 72015367. The next prime is 72015413. The reversal of 72015411 is 11451027.

It is a happy number.

It is not a de Polignac number, because 72015411 - 2¹⁷ = 71884339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72015413) 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, 19795 + ... + 23148.

It is an arithmetic number, because the mean of its divisors is an integer number (6613376).

Almost surely, 2^72015411 is an apocalyptic number.

72015411 is a deficient number, since it is larger than the sum of its proper divisors (33798605).

72015411 is a wasteful number, since it uses less digits than its factorization.

72015411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43002.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 72015411 is about 8486.1894275346. The cubic root of 72015411 is about 416.0464441335.

Adding to 72015411 its reverse (11451027), we get a palindrome (83466438).

The spelling of 72015411 in words is "seventy-two million, fifteen thousand, four hundred eleven".