78492498 has 32 divisors (see below), whose sum is σ = 180216960. Its totient is φ = 22325760.

The previous prime is 78492493. The next prime is 78492509. The reversal of 78492498 is 89429487.

It is a super-2 number, since 2×78492498² = 12322144484560008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78492498.

It is not an unprimeable number, because it can be changed into a prime (78492493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5538 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (5631780).

Almost surely, 2^78492498 is an apocalyptic number.

78492498 is an abundant number, since it is smaller than the sum of its proper divisors (101724462).

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

78492498 is a wasteful number, since it uses less digits than its factorization.

78492498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402.

The product of its digits is 1161216, while the sum is 51.

The square root of 78492498 is about 8859.5992008668. The cubic root of 78492498 is about 428.1632452949.

The spelling of 78492498 in words is "seventy-eight million, four hundred ninety-two thousand, four hundred ninety-eight".