78292064 has 12 divisors (see below), whose sum is σ = 154137564. Its totient is φ = 39146016.

The previous prime is 78292063. The next prime is 78292079. The reversal of 78292064 is 46029287.

It is a super-2 number, since 2×78292064² = 12259294570760192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78292063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223282 + ... + 1223345.

It is an arithmetic number, because the mean of its divisors is an integer number (12844797).

Almost surely, 2^78292064 is an apocalyptic number.

It is an amenable number.

78292064 is a deficient number, since it is larger than the sum of its proper divisors (75845500).

78292064 is a wasteful number, since it uses less digits than its factorization.

78292064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446637 (or 2446629 counting only the distinct ones).

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

The square root of 78292064 is about 8848.2802848915. The cubic root of 78292064 is about 427.7984901698.

The spelling of 78292064 in words is "seventy-eight million, two hundred ninety-two thousand, sixty-four".