22319442 has 64 divisors (see below), whose sum is σ = 52224000. Its totient is φ = 7056720.

The previous prime is 22319441. The next prime is 22319443. The reversal of 22319442 is 24491322.

It is an interprime number because it is at equal distance from previous prime (22319441) and next prime (22319443).

It is a super-3 number, since 3×22319442³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22319441) 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, 112059 + ... + 112257.

It is an arithmetic number, because the mean of its divisors is an integer number (816000).

Almost surely, 2^22319442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22319442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26112000).

22319442 is an abundant number, since it is smaller than the sum of its proper divisors (29904558).

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

22319442 is a wasteful number, since it uses less digits than its factorization.

22319442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 302 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 22319442 is about 4724.3456689789. The cubic root of 22319442 is about 281.5536170081.

The spelling of 22319442 in words is "twenty-two million, three hundred nineteen thousand, four hundred forty-two".