22138410 has 64 divisors (see below), whose sum is σ = 62042112. Its totient is φ = 4950336.

The previous prime is 22138409. The next prime is 22138411. The reversal of 22138410 is 1483122.

It is an interprime number because it is at equal distance from previous prime (22138409) and next prime (22138411).

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

It is not an unprimeable number, because it can be changed into a prime (22138411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8749 + ... + 10991.

It is an arithmetic number, because the mean of its divisors is an integer number (969408).

Almost surely, 2^22138410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22138410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31021056).

22138410 is an abundant number, since it is smaller than the sum of its proper divisors (39903702).

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

22138410 is a wasteful number, since it uses less digits than its factorization.

22138410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 22138410 is about 4705.1471815449. The cubic root of 22138410 is about 280.7903266527.

The spelling of 22138410 in words is "twenty-two million, one hundred thirty-eight thousand, four hundred ten".