72548385 has 32 divisors (see below), whose sum is σ = 142867200. Its totient is φ = 30613248.

The previous prime is 72548383. The next prime is 72548387. The reversal of 72548385 is 58384527.

It is an interprime number because it is at equal distance from previous prime (72548383) and next prime (72548387).

It is not a de Polignac number, because 72548385 - 2¹ = 72548383 is a prime.

It is a super-2 number, since 2×72548385² = 10526536332216450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72548381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25210 + ... + 27939.

It is an arithmetic number, because the mean of its divisors is an integer number (4464600).

Almost surely, 2^72548385 is an apocalyptic number.

It is an amenable number.

72548385 is a deficient number, since it is larger than the sum of its proper divisors (70318815).

72548385 is a wasteful number, since it uses less digits than its factorization.

72548385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53177.

The product of its digits is 268800, while the sum is 42.

The square root of 72548385 is about 8517.5339741031. The cubic root of 72548385 is about 417.0702858712.

The spelling of 72548385 in words is "seventy-two million, five hundred forty-eight thousand, three hundred eighty-five".