84274280 has 16 divisors (see below), whose sum is σ = 189617220. Its totient is φ = 33709696.

The previous prime is 84274273. The next prime is 84274283. The reversal of 84274280 is 8247248.

It can be written as a sum of positive squares in 2 ways, for example, as 83137924 + 1136356 = 9118^2 + 1066^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84274280.

It is not an unprimeable number, because it can be changed into a prime (84274283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053389 + ... + 1053468.

Almost surely, 2^84274280 is an apocalyptic number.

It is an amenable number.

84274280 is an abundant number, since it is smaller than the sum of its proper divisors (105342940).

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

84274280 is a wasteful number, since it uses less digits than its factorization.

84274280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106868 (or 2106864 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 84274280 is about 9180.1023959431. The cubic root of 84274280 is about 438.4280685360.

The spelling of 84274280 in words is "eighty-four million, two hundred seventy-four thousand, two hundred eighty".