80839278 has 48 divisors (see below), whose sum is σ = 191056320. Its totient is φ = 24553152.

The previous prime is 80839271. The next prime is 80839279. The reversal of 80839278 is 87293808.

It is a super-2 number, since 2×80839278² = 13069977735122568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80839271) 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, 16300 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^80839278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80839278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95528160).

80839278 is an abundant number, since it is smaller than the sum of its proper divisors (110217042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80839278 is a wasteful number, since it uses less digits than its factorization.

80839278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473 (or 4470 counting only the distinct ones).

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

The square root of 80839278 is about 8991.0665663201. The cubic root of 80839278 is about 432.3885072407.

The spelling of 80839278 in words is "eighty million, eight hundred thirty-nine thousand, two hundred seventy-eight".