72344475 has 96 divisors (see below), whose sum is σ = 154990080. Its totient is φ = 32400000.

The previous prime is 72344449. The next prime is 72344477. The reversal of 72344475 is 57444327.

It is not a de Polignac number, because 72344475 - 2⁶ = 72344411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72344477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 288100 + ... + 288350.

It is an arithmetic number, because the mean of its divisors is an integer number (1614480).

Almost surely, 2^72344475 is an apocalyptic number.

72344475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72344475 is an abundant number, since it is smaller than the sum of its proper divisors (82645605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72344475 is a wasteful number, since it uses less digits than its factorization.

72344475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 327 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 72344475 is about 8505.5555374120. Note that the first 4 decimals coincide. The cubic root of 72344475 is about 416.6791694026.

The spelling of 72344475 in words is "seventy-two million, three hundred forty-four thousand, four hundred seventy-five".