78404096 has 20 divisors (see below), whose sum is σ = 156656082. Its totient is φ = 39201792.

The previous prime is 78404077. The next prime is 78404099. The reversal of 78404096 is 69040487.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50694400 + 27709696 = 7120^2 + 5264^2 .

It is a super-2 number, since 2×78404096² = 12294404539154432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78404099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76055 + ... + 77078.

Almost surely, 2^78404096 is an apocalyptic number.

It is an amenable number.

78404096 is a deficient number, since it is larger than the sum of its proper divisors (78251986).

78404096 is an equidigital number, since it uses as much as digits as its factorization.

78404096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153151 (or 153135 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 78404096 is about 8854.6087434736. The cubic root of 78404096 is about 428.0024456145.

The spelling of 78404096 in words is "seventy-eight million, four hundred four thousand, ninety-six".