78958480 has 20 divisors (see below), whose sum is σ = 183578652. Its totient is φ = 31583360.

The previous prime is 78958469. The next prime is 78958483. The reversal of 78958480 is 8485987.

It can be written as a sum of positive squares in 2 ways, for example, as 58491904 + 20466576 = 7648^2 + 4524^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (78958483) 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 in 3 ways as a sum of consecutive naturals, for example, 493411 + ... + 493570.

Almost surely, 2^78958480 is an apocalyptic number.

It is an amenable number.

78958480 is an abundant number, since it is smaller than the sum of its proper divisors (104620172).

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

78958480 is a wasteful number, since it uses less digits than its factorization.

78958480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986994 (or 986988 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 78958480 is about 8885.8584278617. The cubic root of 78958480 is about 429.0088583504.

The spelling of 78958480 in words is "seventy-eight million, nine hundred fifty-eight thousand, four hundred eighty".