78380480 has 28 divisors (see below), whose sum is σ = 186644280. Its totient is φ = 31352064.

The previous prime is 78380459. The next prime is 78380503. The reversal of 78380480 is 8408387.

It is a super-2 number, since 2×78380480² = 12286999290060800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122150 + ... + 122789.

Almost surely, 2^78380480 is an apocalyptic number.

It is an amenable number.

78380480 is an abundant number, since it is smaller than the sum of its proper divisors (108263800).

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

78380480 is a wasteful number, since it uses less digits than its factorization.

78380480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244956 (or 244946 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 78380480 is about 8853.2751002101. The cubic root of 78380480 is about 427.9594686048.

The spelling of 78380480 in words is "seventy-eight million, three hundred eighty thousand, four hundred eighty".