78914081 has 16 divisors (see below), whose sum is σ = 86413824. Its totient is φ = 71843904.

The previous prime is 78914039. The next prime is 78914131. The reversal of 78914081 is 18041987.

It is not a de Polignac number, because 78914081 - 2²⁶ = 11805217 is a prime.

It is a super-2 number, since 2×78914081² = 12454864360149122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78914881) 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, 39011 + ... + 40983.

It is an arithmetic number, because the mean of its divisors is an integer number (5400864).

Almost surely, 2^78914081 is an apocalyptic number.

It is an amenable number.

78914081 is a deficient number, since it is larger than the sum of its proper divisors (7499743).

78914081 is a wasteful number, since it uses less digits than its factorization.

78914081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 78914081 is about 8883.3597810738. The cubic root of 78914081 is about 428.9284315421.

The spelling of 78914081 in words is "seventy-eight million, nine hundred fourteen thousand, eighty-one".