22380390 has 48 divisors (see below), whose sum is σ = 58640400. Its totient is φ = 5921856.

The previous prime is 22380361. The next prime is 22380401. The reversal of 22380390 is 9308322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11616 + ... + 13404.

It is an arithmetic number, because the mean of its divisors is an integer number (1221675).

Almost surely, 2^22380390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22380390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29320200).

22380390 is an abundant number, since it is smaller than the sum of its proper divisors (36260010).

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

22380390 is a wasteful number, since it uses less digits than its factorization.

22380390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1938 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22380390 is about 4730.7916885020. The cubic root of 22380390 is about 281.8096648326.

The spelling of 22380390 in words is "twenty-two million, three hundred eighty thousand, three hundred ninety".