78197296 has 10 divisors (see below), whose sum is σ = 151507292. Its totient is φ = 39098640.

The previous prime is 78197279. The next prime is 78197299. The reversal of 78197296 is 69279187.

It is a happy number.

It is a super-2 number, since 2×78197296² = 12229634203423232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78197299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2443650 + ... + 2443681.

Almost surely, 2^78197296 is an apocalyptic number.

It is an amenable number.

78197296 is a deficient number, since it is larger than the sum of its proper divisors (73309996).

78197296 is a wasteful number, since it uses less digits than its factorization.

78197296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887339 (or 4887333 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

The square root of 78197296 is about 8842.9234984817. The cubic root of 78197296 is about 427.6258120634.

The spelling of 78197296 in words is "seventy-eight million, one hundred ninety-seven thousand, two hundred ninety-six".