78244998 has 16 divisors (see below), whose sum is σ = 168527856. Its totient is φ = 24075360.

The previous prime is 78244979. The next prime is 78245039. The reversal of 78244998 is 89944287.

It is a super-2 number, since 2×78244998² = 12244559424040008, 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 78244998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501493 + ... + 501648.

It is an arithmetic number, because the mean of its divisors is an integer number (10532991).

Almost surely, 2^78244998 is an apocalyptic number.

78244998 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

78244998 is an abundant number, since it is smaller than the sum of its proper divisors (90282858).

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

78244998 is a wasteful number, since it uses less digits than its factorization.

78244998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003159.

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

The square root of 78244998 is about 8845.6202722025. The cubic root of 78244998 is about 427.7127479767.

The spelling of 78244998 in words is "seventy-eight million, two hundred forty-four thousand, nine hundred ninety-eight".