22838991 has 16 divisors (see below), whose sum is σ = 34965504. Its totient is φ = 12989664.

The previous prime is 22838989. The next prime is 22838993. The reversal of 22838991 is 19983822.

It is an interprime number because it is at equal distance from previous prime (22838989) and next prime (22838993).

It is not a de Polignac number, because 22838991 - 2¹ = 22838989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22838993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (2185344).

Almost surely, 2^22838991 is an apocalyptic number.

22838991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22838991 is a deficient number, since it is larger than the sum of its proper divisors (12126513).

22838991 is a wasteful number, since it uses less digits than its factorization.

22838991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110.

The product of its digits is 62208, while the sum is 42.

The square root of 22838991 is about 4779.0156936340. The cubic root of 22838991 is about 283.7215373781.

The spelling of 22838991 in words is "twenty-two million, eight hundred thirty-eight thousand, nine hundred ninety-one".