22013340 has 24 divisors (see below), whose sum is σ = 61637520. Its totient is φ = 5870208.

The previous prime is 22013339. The next prime is 22013357. The reversal of 22013340 is 4331022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183385 + ... + 183504.

It is an arithmetic number, because the mean of its divisors is an integer number (2568230).

Almost surely, 2^22013340 is an apocalyptic number.

22013340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22013340 is an abundant number, since it is smaller than the sum of its proper divisors (39624180).

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

22013340 is a wasteful number, since it uses less digits than its factorization.

22013340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366901 (or 366899 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22013340 is about 4691.8375930972. The cubic root of 22013340 is about 280.2605567808.

Adding to 22013340 its reverse (4331022), we get a palindrome (26344362).

The spelling of 22013340 in words is "twenty-two million, thirteen thousand, three hundred forty".