78880293 has 24 divisors (see below), whose sum is σ = 116284896. Its totient is φ = 51516000.

The previous prime is 78880247. The next prime is 78880297. The reversal of 78880293 is 39208887.

It is not a de Polignac number, because 78880293 - 2⁸ = 78880037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78880297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96858 + ... + 97668.

It is an arithmetic number, because the mean of its divisors is an integer number (4845204).

Almost surely, 2^78880293 is an apocalyptic number.

It is an amenable number.

78880293 is a deficient number, since it is larger than the sum of its proper divisors (37404603).

78880293 is a wasteful number, since it uses less digits than its factorization.

78880293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 78880293 is about 8881.4578195249. The cubic root of 78880293 is about 428.8672058708.

The spelling of 78880293 in words is "seventy-eight million, eight hundred eighty thousand, two hundred ninety-three".