78621376 has 14 divisors (see below), whose sum is σ = 156014420. Its totient is φ = 39310656.

The previous prime is 78621371. The next prime is 78621377. The reversal of 78621376 is 67312687.

It is not an unprimeable number, because it can be changed into a prime (78621371) by changing a digit.

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 as a sum of consecutive naturals, namely, 614166 + ... + 614293.

Almost surely, 2^78621376 is an apocalyptic number.

It is an amenable number.

78621376 is a deficient number, since it is larger than the sum of its proper divisors (77393044).

78621376 is a wasteful number, since it uses less digits than its factorization.

78621376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228471 (or 1228461 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 78621376 is about 8866.8695716132. The cubic root of 78621376 is about 428.3974530256.

The spelling of 78621376 in words is "seventy-eight million, six hundred twenty-one thousand, three hundred seventy-six".