78304600 has 48 divisors (see below), whose sum is σ = 198614520. Its totient is φ = 28473600.

The previous prime is 78304579. The next prime is 78304609. The reversal of 78304600 is 640387.

It is a super-2 number, since 2×78304600² = 12263220762320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78304609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15597 + ... + 19996.

Almost surely, 2^78304600 is an apocalyptic number.

It is an amenable number.

78304600 is an abundant number, since it is smaller than the sum of its proper divisors (120309920).

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

78304600 is a wasteful number, since it uses less digits than its factorization.

78304600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35620 (or 35611 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 78304600 is about 8848.9886427772. The cubic root of 78304600 is about 427.8213217545.

Adding to 78304600 its reverse (640387), we get a palindrome (78944987).

The spelling of 78304600 in words is "seventy-eight million, three hundred four thousand, six hundred".