84220992 has 224 divisors, whose sum is σ = 272125440. Its totient is φ = 25436160.

The previous prime is 84220951. The next prime is 84220993. The reversal of 84220992 is 29902248.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (84220993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380642 + ... + 1380702.

Almost surely, 2^84220992 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 84220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136062720).

84220992 is an abundant number, since it is smaller than the sum of its proper divisors (187904448).

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

84220992 is a wasteful number, since it uses less digits than its factorization.

84220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 84220992 is about 9177.1995728545. The cubic root of 84220992 is about 438.3356406490.

The spelling of 84220992 in words is "eighty-four million, two hundred twenty thousand, nine hundred ninety-two".