78683472 has 60 divisors (see below), whose sum is σ = 251665440. Its totient is φ = 22480704.

The previous prime is 78683471. The next prime is 78683477. The reversal of 78683472 is 27438687.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78683471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38022 + ... + 40037.

It is an arithmetic number, because the mean of its divisors is an integer number (4194424).

Almost surely, 2^78683472 is an apocalyptic number.

78683472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78683472 is an abundant number, since it is smaller than the sum of its proper divisors (172981968).

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

78683472 is a wasteful number, since it uses less digits than its factorization.

78683472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78080 (or 78071 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 78683472 is about 8870.3704544962. The cubic root of 78683472 is about 428.5102076360.

The spelling of 78683472 in words is "seventy-eight million, six hundred eighty-three thousand, four hundred seventy-two".