22839381 has 24 divisors (see below), whose sum is σ = 35955840. Its totient is φ = 14325696.

The previous prime is 22839379. The next prime is 22839389. The reversal of 22839381 is 18393822.

It is a happy number.

It is not a de Polignac number, because 22839381 - 2¹ = 22839379 is a prime.

It is a super-2 number, since 2×22839381² = 1043274648926322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22839389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6340 + ... + 9266.

It is an arithmetic number, because the mean of its divisors is an integer number (1498160).

Almost surely, 2^22839381 is an apocalyptic number.

It is an amenable number.

22839381 is a deficient number, since it is larger than the sum of its proper divisors (13116459).

22839381 is a wasteful number, since it uses less digits than its factorization.

22839381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970 (or 2947 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 22839381 is about 4779.0564968412. The cubic root of 22839381 is about 283.7231523176.

It can be divided in two parts, 22839 and 381, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22839381 in words is "twenty-two million, eight hundred thirty-nine thousand, three hundred eighty-one".