72015235 has 4 divisors (see below), whose sum is σ = 86418288. Its totient is φ = 57612184.

The previous prime is 72015221. The next prime is 72015253. The reversal of 72015235 is 53251027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53251027 = 421 ⋅126487.

It is a cyclic number.

It is not a de Polignac number, because 72015235 - 2¹¹ = 72013187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7201519 + ... + 7201528.

It is an arithmetic number, because the mean of its divisors is an integer number (21604572).

Almost surely, 2^72015235 is an apocalyptic number.

72015235 is a deficient number, since it is larger than the sum of its proper divisors (14403053).

72015235 is a wasteful number, since it uses less digits than its factorization.

72015235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14403052.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 72015235 is about 8486.1790577385. The cubic root of 72015235 is about 416.0461052049.

The spelling of 72015235 in words is "seventy-two million, fifteen thousand, two hundred thirty-five".