83278120 has 32 divisors (see below), whose sum is σ = 192443400. Its totient is φ = 32410368.

The previous prime is 83278109. The next prime is 83278123. The reversal of 83278120 is 2187238.

It can be written as a sum of positive squares in 4 ways, for example, as 82192356 + 1085764 = 9066^2 + 1042^2 .

It is not an unprimeable number, because it can be changed into a prime (83278123) 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, 26655 + ... + 29614.

Almost surely, 2^83278120 is an apocalyptic number.

It is an amenable number.

83278120 is an abundant number, since it is smaller than the sum of its proper divisors (109165280).

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

83278120 is a wasteful number, since it uses less digits than its factorization.

83278120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56317 (or 56313 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 83278120 is about 9125.6846318509. The cubic root of 83278120 is about 436.6937444766.

The spelling of 83278120 in words is "eighty-three million, two hundred seventy-eight thousand, one hundred twenty".