78380804 has 6 divisors (see below), whose sum is σ = 137166414. Its totient is φ = 39190400.

The previous prime is 78380789. The next prime is 78380831. The reversal of 78380804 is 40808387.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 5244100 = 8552^2 + 2290^2 .

It is a super-2 number, since 2×78380804² = 12287100871372832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9797597 + ... + 9797604.

It is an arithmetic number, because the mean of its divisors is an integer number (22861069).

Almost surely, 2^78380804 is an apocalyptic number.

It is an amenable number.

78380804 is a deficient number, since it is larger than the sum of its proper divisors (58785610).

78380804 is a wasteful number, since it uses less digits than its factorization.

78380804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19595205 (or 19595203 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 78380804 is about 8853.2933985043. The cubic root of 78380804 is about 427.9600582868.

The spelling of 78380804 in words is "seventy-eight million, three hundred eighty thousand, eight hundred four".