22366890 has 96 divisors (see below), whose sum is σ = 71600256. Its totient is φ = 4717440.

The previous prime is 22366889. The next prime is 22366891. The reversal of 22366890 is 9866322.

It is an interprime number because it is at equal distance from previous prime (22366889) and next prime (22366891).

It is not an unprimeable number, because it can be changed into a prime (22366891) 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, 6825 + ... + 9555.

It is an arithmetic number, because the mean of its divisors is an integer number (745836).

Almost surely, 2^22366890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22366890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35800128).

22366890 is an abundant number, since it is smaller than the sum of its proper divisors (49233366).

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

22366890 is a wasteful number, since it uses less digits than its factorization.

22366890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2761 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 22366890 is about 4729.3646507750. The cubic root of 22366890 is about 281.7529902813.

The spelling of 22366890 in words is "twenty-two million, three hundred sixty-six thousand, eight hundred ninety".