22019532840 has 96 divisors (see below), whose sum is σ = 71766625320. Its totient is φ = 5855207424.

The previous prime is 22019532827. The next prime is 22019532851. The reversal of 22019532840 is 4823591022.

It is a happy number.

22019532840 is a `hidden beast` number, since 2 + 201 + 95 + 328 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20741184324 + 1278348516 = 144018^2 + 35754^2 .

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 = 22019532795 and 22019532804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40444 + ... + 213716.

Almost surely, 2^22019532840 is an apocalyptic number.

22019532840 is a gapful number since it is divisible by the number (20) 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 22019532840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35883312660).

22019532840 is an abundant number, since it is smaller than the sum of its proper divisors (49747092480).

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

22019532840 is a wasteful number, since it uses less digits than its factorization.

22019532840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173643 (or 173636 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 22019532840 in words is "twenty-two billion, nineteen million, five hundred thirty-two thousand, eight hundred forty".