83278412 has 24 divisors (see below), whose sum is σ = 166822656. Its totient is φ = 35633808.

The previous prime is 83278411. The next prime is 83278417. The reversal of 83278412 is 21487238.

It is not an unprimeable number, because it can be changed into a prime (83278411) 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, 18803 + ... + 22805.

It is an arithmetic number, because the mean of its divisors is an integer number (6950944).

Almost surely, 2^83278412 is an apocalyptic number.

It is an amenable number.

83278412 is an abundant number, since it is smaller than the sum of its proper divisors (83544244).

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

83278412 is a wasteful number, since it uses less digits than its factorization.

83278412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757 (or 4755 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 83278412 is about 9125.7006306365. The cubic root of 83278412 is about 436.6942548724.

The spelling of 83278412 in words is "eighty-three million, two hundred seventy-eight thousand, four hundred twelve".