22013742 has 64 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 6345216.

The previous prime is 22013729. The next prime is 22013743. The reversal of 22013742 is 24731022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013743) 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, 71553 + ... + 71859.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^22013742 is an apocalyptic number.

22013742 is an abundant number, since it is smaller than the sum of its proper divisors (28547538).

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

22013742 is a wasteful number, since it uses less digits than its factorization.

22013742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22013742 is about 4691.8804332591. The cubic root of 22013742 is about 280.2622627775.

Adding to 22013742 its reverse (24731022), we get a palindrome (46744764).

The spelling of 22013742 in words is "twenty-two million, thirteen thousand, seven hundred forty-two".