78783480 has 48 divisors (see below), whose sum is σ = 256047480. Its totient is φ = 21008832.

The previous prime is 78783479. The next prime is 78783499. The reversal of 78783480 is 8438787.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 11 ways as a sum of consecutive naturals, for example, 109062 + ... + 109781.

Almost surely, 2^78783480 is an apocalyptic number.

It is an amenable number.

78783480 is an abundant number, since it is smaller than the sum of its proper divisors (177264000).

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

78783480 is a wasteful number, since it uses less digits than its factorization.

78783480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218860 (or 218853 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 78783480 is about 8876.0058584929. The cubic root of 78783480 is about 428.6916786376.

The spelling of 78783480 in words is "seventy-eight million, seven hundred eighty-three thousand, four hundred eighty".