22899870 has 96 divisors (see below), whose sum is σ = 68769792. Its totient is φ = 5178816.

The previous prime is 22899859. The next prime is 22899889. The reversal of 22899870 is 7899822.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102579 + ... + 102801.

It is an arithmetic number, because the mean of its divisors is an integer number (716352).

Almost surely, 2^22899870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22899870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34384896).

22899870 is an abundant number, since it is smaller than the sum of its proper divisors (45869922).

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

22899870 is a wasteful number, since it uses less digits than its factorization.

22899870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 22899870 is about 4785.3808625855. The cubic root of 22899870 is about 283.9734072171.

The spelling of 22899870 in words is "twenty-two million, eight hundred ninety-nine thousand, eight hundred seventy".