78310804 has 48 divisors (see below), whose sum is σ = 163134720. Its totient is φ = 32423040.

The previous prime is 78310801. The next prime is 78310807. The reversal of 78310804 is 40801387.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78310801) and next prime (78310807).

It is a super-2 number, since 2×78310804² = 12265164046252832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78310801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44322 + ... + 46054.

It is an arithmetic number, because the mean of its divisors is an integer number (3398640).

Almost surely, 2^78310804 is an apocalyptic number.

It is an amenable number.

78310804 is an abundant number, since it is smaller than the sum of its proper divisors (84823916).

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

78310804 is a wasteful number, since it uses less digits than its factorization.

78310804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 78310804 is about 8849.3391843685. The cubic root of 78310804 is about 427.8326200834.

The spelling of 78310804 in words is "seventy-eight million, three hundred ten thousand, eight hundred four".