78296397 has 16 divisors (see below), whose sum is σ = 110093760. Its totient is φ = 49358592.

The previous prime is 78296381. The next prime is 78296399. The reversal of 78296397 is 79369287.

It is not a de Polignac number, because 78296397 - 2⁴ = 78296381 is a prime.

It is a super-2 number, since 2×78296397² = 12260651566363218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78296399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43173 + ... + 44949.

It is an arithmetic number, because the mean of its divisors is an integer number (6880860).

Almost surely, 2^78296397 is an apocalyptic number.

It is an amenable number.

78296397 is a deficient number, since it is larger than the sum of its proper divisors (31797363).

78296397 is a wasteful number, since it uses less digits than its factorization.

78296397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572.

The product of its digits is 1143072, while the sum is 51.

The square root of 78296397 is about 8848.5251313425. The cubic root of 78296397 is about 427.8063820581.

It can be divided in two parts, 782 and 96397, that added together give a palindrome (97179).

The spelling of 78296397 in words is "seventy-eight million, two hundred ninety-six thousand, three hundred ninety-seven".