22821522 has 8 divisors (see below), whose sum is σ = 45643056. Its totient is φ = 7607172.

The previous prime is 22821517. The next prime is 22821529. The reversal of 22821522 is 22512822.

It is a sphenic number, since it is the product of 3 distinct primes.

22821522 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22821492 and 22821501.

It is not an unprimeable number, because it can be changed into a prime (22821529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901788 + ... + 1901799.

It is an arithmetic number, because the mean of its divisors is an integer number (5705382).

Almost surely, 2^22821522 is an apocalyptic number.

22821522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22821522 is a wasteful number, since it uses less digits than its factorization.

22821522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803592.

The product of its digits is 1280, while the sum is 24.

The square root of 22821522 is about 4777.1876663996. The cubic root of 22821522 is about 283.6491816461.

The spelling of 22821522 in words is "twenty-two million, eight hundred twenty-one thousand, five hundred twenty-two".