22231405 has 16 divisors (see below), whose sum is σ = 30602880. Its totient is φ = 15187392.

The previous prime is 22231403. The next prime is 22231421. The reversal of 22231405 is 50413222.

It is a cyclic number.

It is not a de Polignac number, because 22231405 - 2¹ = 22231403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9711 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (1912680).

Almost surely, 2^22231405 is an apocalyptic number.

It is an amenable number.

22231405 is a deficient number, since it is larger than the sum of its proper divisors (8371475).

22231405 is a wasteful number, since it uses less digits than its factorization.

22231405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22231405 is about 4715.0190879783. The cubic root of 22231405 is about 281.1829417081.

Adding to 22231405 its reverse (50413222), we get a palindrome (72644627).

The spelling of 22231405 in words is "twenty-two million, two hundred thirty-one thousand, four hundred five".