78094980 has 36 divisors (see below), whose sum is σ = 236888652. Its totient is φ = 20825280.

The previous prime is 78094979. The next prime is 78095029. The reversal of 78094980 is 8949087.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 68657796 = 3072^2 + 8286^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×78094980³ (a number of 25 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216751 + ... + 217110.

Almost surely, 2^78094980 is an apocalyptic number.

It is an amenable number.

78094980 is an abundant number, since it is smaller than the sum of its proper divisors (158793672).

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

78094980 is a wasteful number, since it uses less digits than its factorization.

78094980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433876 (or 433871 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 78094980 is about 8837.1364140201. The cubic root of 78094980 is about 427.4392239445.

The spelling of 78094980 in words is "seventy-eight million, ninety-four thousand, nine hundred eighty".