78294408 has 32 divisors (see below), whose sum is σ = 196627200. Its totient is φ = 25979328.

The previous prime is 78294407. The next prime is 78294427. The reversal of 78294408 is 80449287.

It is a super-2 number, since 2×78294408² = 12260028648140928, 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 78294408.

It is not an unprimeable number, because it can be changed into a prime (78294407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963 + ... + 12666.

It is an arithmetic number, because the mean of its divisors is an integer number (6144600).

Almost surely, 2^78294408 is an apocalyptic number.

It is an amenable number.

78294408 is an abundant number, since it is smaller than the sum of its proper divisors (118332792).

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

78294408 is a wasteful number, since it uses less digits than its factorization.

78294408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14861 (or 14857 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 78294408 is about 8848.4127390171. The cubic root of 78294408 is about 427.8027594389.

The spelling of 78294408 in words is "seventy-eight million, two hundred ninety-four thousand, four hundred eight".