22840422 has 32 divisors (see below), whose sum is σ = 50056704. Its totient is φ = 6890400.

The previous prime is 22840393. The next prime is 22840427. The reversal of 22840422 is 22404822.

It is a junction number, because it is equal to n+sod(n) for n = 22840392 and 22840401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840427) 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 15 ways as a sum of consecutive naturals, for example, 17248 + ... + 18524.

It is an arithmetic number, because the mean of its divisors is an integer number (1564272).

Almost surely, 2^22840422 is an apocalyptic number.

22840422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22840422 is an abundant number, since it is smaller than the sum of its proper divisors (27216282).

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

22840422 is a wasteful number, since it uses less digits than its factorization.

22840422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22840422 is about 4779.1654083114. The cubic root of 22840422 is about 283.7274628739.

Subtracting from 22840422 its reverse (22404822), we obtain a square (435600 = 660²).

The spelling of 22840422 in words is "twenty-two million, eight hundred forty thousand, four hundred twenty-two".