78408363 has 24 divisors (see below), whose sum is σ = 116829328. Its totient is φ = 46728000.

The previous prime is 78408349. The next prime is 78408367. The reversal of 78408363 is 36380487.

It is not a de Polignac number, because 78408363 - 2⁶ = 78408299 is a prime.

It is a super-2 number, since 2×78408363² = 12295742776679538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78408367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20373 + ... + 23913.

Almost surely, 2^78408363 is an apocalyptic number.

78408363 is a deficient number, since it is larger than the sum of its proper divisors (38420965).

78408363 is a wasteful number, since it uses less digits than its factorization.

78408363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627 (or 3616 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 78408363 is about 8854.8496881652. The cubic root of 78408363 is about 428.0102098912.

The spelling of 78408363 in words is "seventy-eight million, four hundred eight thousand, three hundred sixty-three".