22239441 has 40 divisors (see below), whose sum is σ = 38650304. Its totient is φ = 12480480.

The previous prime is 22239439. The next prime is 22239461. The reversal of 22239441 is 14493222.

22239441 = 365² + 366² + ... + 486².

It is not a de Polignac number, because 22239441 - 2¹ = 22239439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22239421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34266 + ... + 34908.

Almost surely, 2^22239441 is an apocalyptic number.

22239441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22239441 is a deficient number, since it is larger than the sum of its proper divisors (16410863).

22239441 is an equidigital number, since it uses as much as digits as its factorization.

22239441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 714 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 22239441 is about 4715.8711814468. The cubic root of 22239441 is about 281.2168174185.

It can be divided in two parts, 2223 and 9441, that added together give a square (11664 = 108²).

The spelling of 22239441 in words is "twenty-two million, two hundred thirty-nine thousand, four hundred forty-one".