84022428 has 48 divisors (see below), whose sum is σ = 225275904. Its totient is φ = 23876160.

The previous prime is 84022423. The next prime is 84022429. The reversal of 84022428 is 82422048.

It is a junction number, because it is equal to n+sod(n) for n = 84022395 and 84022404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84022423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13426 + ... + 18662.

It is an arithmetic number, because the mean of its divisors is an integer number (4693248).

Almost surely, 2^84022428 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 84022428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112637952).

84022428 is an abundant number, since it is smaller than the sum of its proper divisors (141253476).

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

84022428 is a wasteful number, since it uses less digits than its factorization.

84022428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 84022428 is about 9166.3748559613. The cubic root of 84022428 is about 437.9908882406.

The spelling of 84022428 in words is "eighty-four million, twenty-two thousand, four hundred twenty-eight".