72472275 has 36 divisors (see below), whose sum is σ = 137448792. Its totient is φ = 36376320.

The previous prime is 72472273. The next prime is 72472303. The reversal of 72472275 is 57227427.

It is not a de Polignac number, because 72472275 - 2¹ = 72472273 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72472271) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5649 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (3818022).

Almost surely, 2^72472275 is an apocalyptic number.

72472275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72472275 is a deficient number, since it is larger than the sum of its proper divisors (64976517).

72472275 is a wasteful number, since it uses less digits than its factorization.

72472275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18980 (or 18972 counting only the distinct ones).

The product of its digits is 54880, while the sum is 36.

The square root of 72472275 is about 8513.0649592259. The cubic root of 72472275 is about 416.9243863383.

The spelling of 72472275 in words is "seventy-two million, four hundred seventy-two thousand, two hundred seventy-five".