22139310 has 32 divisors (see below), whose sum is σ = 53384832. Its totient is φ = 5876000.

The previous prime is 22139309. The next prime is 22139311. The reversal of 22139310 is 1393122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22139309) and next prime (22139311).

It is a super-2 number, since 2×22139310² = 980298094552200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22139311) 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 15 ways as a sum of consecutive naturals, for example, 5185 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (1668276).

Almost surely, 2^22139310 is an apocalyptic number.

22139310 is an abundant number, since it is smaller than the sum of its proper divisors (31245522).

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

22139310 is a wasteful number, since it uses less digits than its factorization.

22139310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 22139310 is about 4705.2428205142. The cubic root of 22139310 is about 280.7941316214.

It can be divided in two parts, 2 and 2139310, that added together give a palindrome (2139312).

The spelling of 22139310 in words is "twenty-two million, one hundred thirty-nine thousand, three hundred ten".