78547480 has 64 divisors (see below), whose sum is σ = 204158880. Its totient is φ = 26880000.

The previous prime is 78547477. The next prime is 78547519. The reversal of 78547480 is 8474587.

It is a super-2 number, since 2×78547480² = 12339413228700800, 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2230 + ... + 12730.

Almost surely, 2^78547480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78547480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102079440).

78547480 is an abundant number, since it is smaller than the sum of its proper divisors (125611400).

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

78547480 is a wasteful number, since it uses less digits than its factorization.

78547480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540 (or 10536 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 78547480 is about 8862.7016197094. The cubic root of 78547480 is about 428.2631944518.

The spelling of 78547480 in words is "seventy-eight million, five hundred forty-seven thousand, four hundred eighty".