78790198 has 8 divisors (see below), whose sum is σ = 118702080. Its totient is φ = 39222840.

The previous prime is 78790133. The next prime is 78790213. The reversal of 78790198 is 89109787.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85558 + ... + 86473.

It is an arithmetic number, because the mean of its divisors is an integer number (14837760).

Almost surely, 2^78790198 is an apocalyptic number.

78790198 is a deficient number, since it is larger than the sum of its proper divisors (39911882).

78790198 is a wasteful number, since it uses less digits than its factorization.

78790198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172262.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 78790198 is about 8876.3842864085. The cubic root of 78790198 is about 428.7038633784.

The spelling of 78790198 in words is "seventy-eight million, seven hundred ninety thousand, one hundred ninety-eight".