78547476 has 36 divisors (see below), whose sum is σ = 209676768. Its totient is φ = 22418928.

The previous prime is 78547451. The next prime is 78547477. The reversal of 78547476 is 67474587.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78547477) 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, 80745 + ... + 81711.

Almost surely, 2^78547476 is an apocalyptic number.

It is an amenable number.

78547476 is an abundant number, since it is smaller than the sum of its proper divisors (131129292).

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

78547476 is an equidigital number, since it uses as much as digits as its factorization.

78547476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948 (or 979 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 48.

The square root of 78547476 is about 8862.7013940446. The cubic root of 78547476 is about 428.2631871821.

The spelling of 78547476 in words is "seventy-eight million, five hundred forty-seven thousand, four hundred seventy-six".