78285804 has 24 divisors (see below), whose sum is σ = 183590400. Its totient is φ = 25963344.

The previous prime is 78285797. The next prime is 78285811. The reversal of 78285804 is 40858287.

It is an interprime number because it is at equal distance from previous prime (78285797) and next prime (78285811).

It is a super-2 number, since 2×78285804² = 12257334215852832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14004 + ... + 18779.

It is an arithmetic number, because the mean of its divisors is an integer number (7649600).

Almost surely, 2^78285804 is an apocalyptic number.

It is an amenable number.

78285804 is an abundant number, since it is smaller than the sum of its proper divisors (105304596).

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

78285804 is a wasteful number, since it uses less digits than its factorization.

78285804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32989 (or 32987 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 78285804 is about 8847.9265367655. The cubic root of 78285804 is about 427.7870880353.

The spelling of 78285804 in words is "seventy-eight million, two hundred eighty-five thousand, eight hundred four".