22402380 has 192 divisors, whose sum is σ = 84446208. Its totient is φ = 4285440.

The previous prime is 22402343. The next prime is 22402381. The reversal of 22402380 is 8320422.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59874 + ... + 60246.

It is an arithmetic number, because the mean of its divisors is an integer number (439824).

Almost surely, 2^22402380 is an apocalyptic number.

22402380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22402380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42223104).

22402380 is an abundant number, since it is smaller than the sum of its proper divisors (62043828).

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

22402380 is a wasteful number, since it uses less digits than its factorization.

22402380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22402380 is about 4733.1152531921. The cubic root of 22402380 is about 281.9019326022.

The spelling of 22402380 in words is "twenty-two million, four hundred two thousand, three hundred eighty".