78412998 has 8 divisors (see below), whose sum is σ = 156826008. Its totient is φ = 26137664.

The previous prime is 78412991. The next prime is 78413009. The reversal of 78412998 is 89921487.

It is a sphenic number, since it is the product of 3 distinct primes.

78412998 is an admirable number.

It is a super-2 number, since 2×78412998² = 12297196510696008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78412991) 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, 6534411 + ... + 6534422.

It is an arithmetic number, because the mean of its divisors is an integer number (19603251).

Almost surely, 2^78412998 is an apocalyptic number.

78412998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78412998 is a wasteful number, since it uses less digits than its factorization.

78412998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13068838.

The product of its digits is 290304, while the sum is 48.

The square root of 78412998 is about 8855.1114052845. Note that the first 3 decimals coincide. The cubic root of 78412998 is about 428.0186434654.

The spelling of 78412998 in words is "seventy-eight million, four hundred twelve thousand, nine hundred ninety-eight".