72400395 has 8 divisors (see below), whose sum is σ = 115840656. Its totient is φ = 38613536.

The previous prime is 72400387. The next prime is 72400397. The reversal of 72400395 is 59300427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72400395 - 2³ = 72400387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72400397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2413332 + ... + 2413361.

It is an arithmetic number, because the mean of its divisors is an integer number (14480082).

Almost surely, 2^72400395 is an apocalyptic number.

72400395 is a deficient number, since it is larger than the sum of its proper divisors (43440261).

72400395 is a wasteful number, since it uses less digits than its factorization.

72400395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826701.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 72400395 is about 8508.8421656533. The cubic root of 72400395 is about 416.7865017094.

The spelling of 72400395 in words is "seventy-two million, four hundred thousand, three hundred ninety-five".