78132994 has 16 divisors (see below), whose sum is σ = 119069496. Its totient is φ = 38448000.

The previous prime is 78132979. The next prime is 78133007. The reversal of 78132994 is 49923187.

It can be written as a sum of positive squares in 4 ways, for example, as 43758225 + 34374769 = 6615^2 + 5863^2 .

It is a super-2 number, since 2×78132994² = 12209529502808072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78132994.

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, 35494 + ... + 37630.

Almost surely, 2^78132994 is an apocalyptic number.

78132994 is a deficient number, since it is larger than the sum of its proper divisors (40936502).

78132994 is a wasteful number, since it uses less digits than its factorization.

78132994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421.

The product of its digits is 108864, while the sum is 43.

The square root of 78132994 is about 8839.2869621933. The cubic root of 78132994 is about 427.5085670228.

The spelling of 78132994 in words is "seventy-eight million, one hundred thirty-two thousand, nine hundred ninety-four".