78364830 has 32 divisors (see below), whose sum is σ = 190729728. Its totient is φ = 20602400.

The previous prime is 78364829. The next prime is 78364859. The reversal of 78364830 is 3846387.

It is a super-2 number, since 2×78364830² = 12282093161857800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16266 + ... + 20525.

It is an arithmetic number, because the mean of its divisors is an integer number (5960304).

Almost surely, 2^78364830 is an apocalyptic number.

78364830 is an abundant number, since it is smaller than the sum of its proper divisors (112364898).

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

78364830 is a wasteful number, since it uses less digits than its factorization.

78364830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36872.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 78364830 is about 8852.3912023814. The cubic root of 78364830 is about 427.9309835726.

The spelling of 78364830 in words is "seventy-eight million, three hundred sixty-four thousand, eight hundred thirty".