78898494 has 16 divisors (see below), whose sum is σ = 157942800. Its totient is φ = 26275200.

The previous prime is 78898481. The next prime is 78898511. The reversal of 78898494 is 49489887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 12680.

It is an arithmetic number, because the mean of its divisors is an integer number (9871425).

Almost surely, 2^78898494 is an apocalyptic number.

78898494 is an abundant number, since it is smaller than the sum of its proper divisors (79044306).

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

78898494 is a wasteful number, since it uses less digits than its factorization.

78898494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155.

The product of its digits is 4644864, while the sum is 57.

The square root of 78898494 is about 8882.4824232869. The cubic root of 78898494 is about 428.9001892326.

The spelling of 78898494 in words is "seventy-eight million, eight hundred ninety-eight thousand, four hundred ninety-four".