22534020 has 72 divisors (see below), whose sum is σ = 71338176. Its totient is φ = 5746752.

The previous prime is 22534013. The next prime is 22534033. The reversal of 22534020 is 2043522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22533984 and 22534002.

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, 1419 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (990808).

Almost surely, 2^22534020 is an apocalyptic number.

22534020 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 22534020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35669088).

22534020 is an abundant number, since it is smaller than the sum of its proper divisors (48804156).

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

22534020 is a wasteful number, since it uses less digits than its factorization.

22534020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22534020 is about 4747.0011586264. The cubic root of 22534020 is about 282.4530216606.

Adding to 22534020 its reverse (2043522), we get a palindrome (24577542).

The spelling of 22534020 in words is "twenty-two million, five hundred thirty-four thousand, twenty".