22534380 has 144 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 5166720.

The previous prime is 22534357. The next prime is 22534387. The reversal of 22534380 is 8343522.

22534380 is a `hidden beast` number, since 225 + 3 + 438 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (22534387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37321 + ... + 37919.

It is an arithmetic number, because the mean of its divisors is an integer number (546000).

Almost surely, 2^22534380 is an apocalyptic number.

22534380 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 22534380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39312000).

22534380 is an abundant number, since it is smaller than the sum of its proper divisors (56089620).

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

22534380 is a wasteful number, since it uses less digits than its factorization.

22534380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 22534380 is about 4747.0390771511. The cubic root of 22534380 is about 282.4545257944.

The spelling of 22534380 in words is "twenty-two million, five hundred thirty-four thousand, three hundred eighty".