78681498 has 32 divisors (see below), whose sum is σ = 180264960. Its totient is φ = 22427760.

The previous prime is 78681479. The next prime is 78681509. The reversal of 78681498 is 89418687.

It is a self number, because there is not a number n which added to its sum of digits gives 78681498.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18163 + ... + 22073.

It is an arithmetic number, because the mean of its divisors is an integer number (5633280).

Almost surely, 2^78681498 is an apocalyptic number.

78681498 is an abundant number, since it is smaller than the sum of its proper divisors (101583462).

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

78681498 is a wasteful number, since it uses less digits than its factorization.

78681498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402.

The product of its digits is 774144, while the sum is 51.

The square root of 78681498 is about 8870.2591844884. The cubic root of 78681498 is about 428.5066241379.

The spelling of 78681498 in words is "seventy-eight million, six hundred eighty-one thousand, four hundred ninety-eight".