78492508 has 12 divisors (see below), whose sum is σ = 137682160. Its totient is φ = 39154752.

The previous prime is 78492493. The next prime is 78492509. The reversal of 78492508 is 80529487.

It is a super-2 number, since 2×78492508² = 12322147624260128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78492509) 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, 20928 + ... + 24391.

Almost surely, 2^78492508 is an apocalyptic number.

It is an amenable number.

78492508 is a deficient number, since it is larger than the sum of its proper divisors (59189652).

78492508 is a wasteful number, since it uses less digits than its factorization.

78492508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45756 (or 45754 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 78492508 is about 8859.5997652264. The cubic root of 78492508 is about 428.1632634777.

The spelling of 78492508 in words is "seventy-eight million, four hundred ninety-two thousand, five hundred eight".