78474320 has 40 divisors (see below), whose sum is σ = 182834280. Its totient is φ = 31324160.

The previous prime is 78474311. The next prime is 78474337. The reversal of 78474320 is 2347487.

It can be written as a sum of positive squares in 4 ways, for example, as 1175056 + 77299264 = 1084^2 + 8792^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60236 + ... + 61524.

It is an arithmetic number, because the mean of its divisors is an integer number (4570857).

Almost surely, 2^78474320 is an apocalyptic number.

It is an amenable number.

78474320 is an abundant number, since it is smaller than the sum of its proper divisors (104359960).

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

78474320 is a wasteful number, since it uses less digits than its factorization.

78474320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 78474320 is about 8858.5732485542. The cubic root of 78474320 is about 428.1301901088.

It can be divided in two parts, 7847 and 4320, that added together give a cube (12167 = 23³).

The spelling of 78474320 in words is "seventy-eight million, four hundred seventy-four thousand, three hundred twenty".