72478379 has 4 divisors (see below), whose sum is σ = 72549576. Its totient is φ = 72407184.

The previous prime is 72478363. The next prime is 72478381. The reversal of 72478379 is 97387427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72478379 - 2⁴ = 72478363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72378379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34049 + ... + 36114.

It is an arithmetic number, because the mean of its divisors is an integer number (18137394).

Almost surely, 2^72478379 is an apocalyptic number.

72478379 is a deficient number, since it is larger than the sum of its proper divisors (71197).

72478379 is a wasteful number, since it uses less digits than its factorization.

72478379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71196.

The product of its digits is 592704, while the sum is 47.

The square root of 72478379 is about 8513.4234594551. The cubic root of 72478379 is about 416.9360912052.

The spelling of 72478379 in words is "seventy-two million, four hundred seventy-eight thousand, three hundred seventy-nine".