78040818 has 24 divisors (see below), whose sum is σ = 169381056. Its totient is φ = 25968600.

The previous prime is 78040801. The next prime is 78040871. The reversal of 78040818 is 81804087.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7923 + ... + 14793.

It is an arithmetic number, because the mean of its divisors is an integer number (7057544).

Almost surely, 2^78040818 is an apocalyptic number.

78040818 is an abundant number, since it is smaller than the sum of its proper divisors (91340238).

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

78040818 is a wasteful number, since it uses less digits than its factorization.

78040818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 78040818 is about 8834.0714282827. The cubic root of 78040818 is about 427.3403856779.

The spelling of 78040818 in words is "seventy-eight million, forty thousand, eight hundred eighteen".