22401044 has 6 divisors (see below), whose sum is σ = 39201834. Its totient is φ = 11200520.

The previous prime is 22401037. The next prime is 22401077. The reversal of 22401044 is 44010422.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 2598544 = 4450^2 + 1612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800127 + ... + 2800134.

It is an arithmetic number, because the mean of its divisors is an integer number (6533639).

Almost surely, 2^22401044 is an apocalyptic number.

It is an amenable number.

22401044 is a deficient number, since it is larger than the sum of its proper divisors (16800790).

22401044 is a wasteful number, since it uses less digits than its factorization.

22401044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600265 (or 5600263 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22401044 is about 4732.9741178249. The cubic root of 22401044 is about 281.8963286073.

Adding to 22401044 its reverse (44010422), we get a palindrome (66411466).

The spelling of 22401044 in words is "twenty-two million, four hundred one thousand, forty-four".