78090460 has 24 divisors (see below), whose sum is σ = 187417440. Its totient is φ = 26773824.

The previous prime is 78090449. The next prime is 78090479. The reversal of 78090460 is 6409087.

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 7 ways as a sum of consecutive naturals, for example, 278755 + ... + 279034.

It is an arithmetic number, because the mean of its divisors is an integer number (7809060).

Almost surely, 2^78090460 is an apocalyptic number.

78090460 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78090460 is an abundant number, since it is smaller than the sum of its proper divisors (109326980).

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

78090460 is a wasteful number, since it uses less digits than its factorization.

78090460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557805 (or 557803 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 78090460 is about 8836.8806713681. The cubic root of 78090460 is about 427.4309773087.

The spelling of 78090460 in words is "seventy-eight million, ninety thousand, four hundred sixty".