78023881 has 8 divisors (see below), whose sum is σ = 84339584. Its totient is φ = 71753040.

The previous prime is 78023879. The next prime is 78023893. The reversal of 78023881 is 18832087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78023881 - 2¹ = 78023879 is a prime.

It is a super-2 number, since 2×78023881² = 12175452012604322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78023881.

It is not an unprimeable number, because it can be changed into a prime (78023381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7551 + ... + 14596.

It is an arithmetic number, because the mean of its divisors is an integer number (10542448).

Almost surely, 2^78023881 is an apocalyptic number.

It is an amenable number.

78023881 is a deficient number, since it is larger than the sum of its proper divisors (6315703).

78023881 is a wasteful number, since it uses less digits than its factorization.

78023881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22431.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 78023881 is about 8833.1127582523. The cubic root of 78023881 is about 427.3094685760.

The spelling of 78023881 in words is "seventy-eight million, twenty-three thousand, eight hundred eighty-one".