22049140 has 12 divisors (see below), whose sum is σ = 46303236. Its totient is φ = 8819648.

The previous prime is 22049117. The next prime is 22049141. The reversal of 22049140 is 4194022.

It can be written as a sum of positive squares in 2 ways, for example, as 2917264 + 19131876 = 1708^2 + 4374^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22049141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551209 + ... + 551248.

It is an arithmetic number, because the mean of its divisors is an integer number (3858603).

Almost surely, 2^22049140 is an apocalyptic number.

22049140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22049140 is an abundant number, since it is smaller than the sum of its proper divisors (24254096).

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

22049140 is a wasteful number, since it uses less digits than its factorization.

22049140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102466 (or 1102464 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22049140 is about 4695.6511795490. The cubic root of 22049140 is about 280.4124024922.

The spelling of 22049140 in words is "twenty-two million, forty-nine thousand, one hundred forty".