78368398 has 8 divisors (see below), whose sum is σ = 118478592. Its totient is φ = 38875536.

The previous prime is 78368393. The next prime is 78368399. The reversal of 78368398 is 89386387.

It is a happy number.

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

It is a super-2 number, since 2×78368398² = 12283211610172808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78368393) 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, 154015 + ... + 154522.

It is an arithmetic number, because the mean of its divisors is an integer number (14809824).

Almost surely, 2^78368398 is an apocalyptic number.

78368398 is a deficient number, since it is larger than the sum of its proper divisors (40110194).

78368398 is a wasteful number, since it uses less digits than its factorization.

78368398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308666.

The product of its digits is 1741824, while the sum is 52.

The square root of 78368398 is about 8852.5927275573. The cubic root of 78368398 is about 427.9374781297.

The spelling of 78368398 in words is "seventy-eight million, three hundred sixty-eight thousand, three hundred ninety-eight".