84689472 has 112 divisors (see below), whose sum is σ = 260534912. Its totient is φ = 23777280.

The previous prime is 84689459. The next prime is 84689509. The reversal of 84689472 is 27498648.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81468 + ... + 82500.

Almost surely, 2^84689472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84689472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130267456).

84689472 is an abundant number, since it is smaller than the sum of its proper divisors (175845440).

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

84689472 is a wasteful number, since it uses less digits than its factorization.

84689472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1106 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 84689472 is about 9202.6883028819. The cubic root of 84689472 is about 439.1468869186.

The spelling of 84689472 in words is "eighty-four million, six hundred eighty-nine thousand, four hundred seventy-two".