83278984 has 16 divisors (see below), whose sum is σ = 158288220. Its totient is φ = 41068800.

The previous prime is 83278961. The next prime is 83278997. The reversal of 83278984 is 48987238.

It can be written as a sum of positive squares in 2 ways, for example, as 74338884 + 8940100 = 8622^2 + 2990^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70717 + ... + 71884.

Almost surely, 2^83278984 is an apocalyptic number.

It is an amenable number.

83278984 is a deficient number, since it is larger than the sum of its proper divisors (75009236).

83278984 is a wasteful number, since it uses less digits than its factorization.

83278984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142680 (or 142676 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 83278984 is about 9125.7319706421. The cubic root of 83278984 is about 436.6952546855.

The spelling of 83278984 in words is "eighty-three million, two hundred seventy-eight thousand, nine hundred eighty-four".