72113475 has 24 divisors (see below), whose sum is σ = 136261120. Its totient is φ = 32965920.

The previous prime is 72113449. The next prime is 72113479. The reversal of 72113475 is 57431127.

It is not a de Polignac number, because 72113475 - 2⁶ = 72113411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72113479) 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, 68155 + ... + 69204.

Almost surely, 2^72113475 is an apocalyptic number.

72113475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72113475 is a deficient number, since it is larger than the sum of its proper divisors (64147645).

72113475 is a wasteful number, since it uses less digits than its factorization.

72113475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137379 (or 137374 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 72113475 is about 8491.9653202306. The cubic root of 72113475 is about 416.2352031461.

It can be divided in two parts, 721 and 13475, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 72113475 in words is "seventy-two million, one hundred thirteen thousand, four hundred seventy-five".