22889890 has 16 divisors (see below), whose sum is σ = 42207480. Its totient is φ = 8932480.

The previous prime is 22889887. The next prime is 22889897. The reversal of 22889890 is 9898822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11553201 + 11336689 = 3399^2 + 3367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22889890.

It is not an unprimeable number, because it can be changed into a prime (22889897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27505 + ... + 28324.

Almost surely, 2^22889890 is an apocalyptic number.

22889890 is a deficient number, since it is larger than the sum of its proper divisors (19317590).

22889890 is a wasteful number, since it uses less digits than its factorization.

22889890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55877.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 22889890 is about 4784.3379897327. The cubic root of 22889890 is about 283.9321483743.

The spelling of 22889890 in words is "twenty-two million, eight hundred eighty-nine thousand, eight hundred ninety".