78026281 has 8 divisors (see below), whose sum is σ = 81555264. Its totient is φ = 74508720.

The previous prime is 78026227. The next prime is 78026329. The reversal of 78026281 is 18262087.

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 78026281 - 2⁹ = 78025769 is a prime.

It is a super-2 number, since 2×78026281² = 12176201053381922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78026881) 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, 13066 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (10194408).

Almost surely, 2^78026281 is an apocalyptic number.

It is an amenable number.

78026281 is a deficient number, since it is larger than the sum of its proper divisors (3528983).

78026281 is a wasteful number, since it uses less digits than its factorization.

78026281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 78026281 is about 8833.2486096566. The cubic root of 78026281 is about 427.3138498509.

The spelling of 78026281 in words is "seventy-eight million, twenty-six thousand, two hundred eighty-one".