78198074 has 8 divisors (see below), whose sum is σ = 117911808. Its totient is φ = 38894140.

The previous prime is 78198067. The next prime is 78198097. The reversal of 78198074 is 47089187.

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

It is a super-2 number, since 2×78198074² = 12229877554618952, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 101972 + ... + 102735.

It is an arithmetic number, because the mean of its divisors is an integer number (14738976).

Almost surely, 2^78198074 is an apocalyptic number.

78198074 is a deficient number, since it is larger than the sum of its proper divisors (39713734).

78198074 is a wasteful number, since it uses less digits than its factorization.

78198074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204900.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 78198074 is about 8842.9674883491. The cubic root of 78198074 is about 427.6272302360.

The spelling of 78198074 in words is "seventy-eight million, one hundred ninety-eight thousand, seventy-four".