22642470 has 64 divisors (see below), whose sum is σ = 63944640. Its totient is φ = 5681664.

The previous prime is 22642469. The next prime is 22642507. The reversal of 22642470 is 7424622.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2124 + ... + 7056.

It is an arithmetic number, because the mean of its divisors is an integer number (999135).

Almost surely, 2^22642470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22642470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31972320).

22642470 is an abundant number, since it is smaller than the sum of its proper divisors (41302170).

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

22642470 is a wasteful number, since it uses less digits than its factorization.

22642470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966 (or 4960 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 22642470 is about 4758.4104488789. The cubic root of 22642470 is about 282.9054194131.

The spelling of 22642470 in words is "twenty-two million, six hundred forty-two thousand, four hundred seventy".