84081276 has 18 divisors (see below), whose sum is σ = 212538872. Its totient is φ = 28027080.

The previous prime is 84081271. The next prime is 84081301. The reversal of 84081276 is 67218048.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2335591 = 84081276 / (8 + 4 + 0 + 8 + 1 + 2 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 84081276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84081271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1167760 + ... + 1167831.

Almost surely, 2^84081276 is an apocalyptic number.

It is an amenable number.

84081276 is an abundant number, since it is smaller than the sum of its proper divisors (128457596).

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

84081276 is a wasteful number, since it uses less digits than its factorization.

84081276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335601 (or 2335596 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 84081276 is about 9169.5842871964. The cubic root of 84081276 is about 438.0931183765.

The spelling of 84081276 in words is "eighty-four million, eighty-one thousand, two hundred seventy-six".