19422828 has 60 divisors (see below), whose sum is σ = 51240112. Its totient is φ = 6415200.

The previous prime is 19422803. The next prime is 19422829. The reversal of 19422828 is 82822491.

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

It is a junction number, because it is equal to n+sod(n) for n = 19422792 and 19422801.

It is not an unprimeable number, because it can be changed into a prime (19422829) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48726 + ... + 49122.

Almost surely, 2^19422828 is an apocalyptic number.

19422828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19422828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25620056).

19422828 is an abundant number, since it is smaller than the sum of its proper divisors (31817284).

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

19422828 is a wasteful number, since it uses less digits than its factorization.

19422828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 553 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 19422828 is about 4407.1337624356. The cubic root of 19422828 is about 268.8050899865.

The spelling of 19422828 in words is "nineteen million, four hundred twenty-two thousand, eight hundred twenty-eight".