78297308 has 12 divisors (see below), whose sum is σ = 145080432. Its totient is φ = 36845760.

The previous prime is 78297301. The next prime is 78297311. The reversal of 78297308 is 80379287.

It is a happy number.

It is a super-2 number, since 2×78297308² = 12260936880093728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78297301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575648 + ... + 575783.

It is an arithmetic number, because the mean of its divisors is an integer number (12090036).

Almost surely, 2^78297308 is an apocalyptic number.

It is an amenable number.

78297308 is a deficient number, since it is larger than the sum of its proper divisors (66783124).

78297308 is a wasteful number, since it uses less digits than its factorization.

78297308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151452 (or 1151450 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 78297308 is about 8848.5766086981. The cubic root of 78297308 is about 427.8080412664.

The spelling of 78297308 in words is "seventy-eight million, two hundred ninety-seven thousand, three hundred eight".