22361405 has 24 divisors (see below), whose sum is σ = 30796416. Its totient is φ = 15546080.

The previous prime is 22361399. The next prime is 22361453. The reversal of 22361405 is 50416322.

It is not a de Polignac number, because 22361405 - 2⁸ = 22361149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13112 + ... + 14718.

It is an arithmetic number, because the mean of its divisors is an integer number (1283184).

Almost surely, 2^22361405 is an apocalyptic number.

It is an amenable number.

22361405 is a deficient number, since it is larger than the sum of its proper divisors (8435011).

22361405 is a wasteful number, since it uses less digits than its factorization.

22361405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1646 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22361405 is about 4728.7847276018. The cubic root of 22361405 is about 281.7299571060.

Adding to 22361405 its reverse (50416322), we get a palindrome (72777727).

The spelling of 22361405 in words is "twenty-two million, three hundred sixty-one thousand, four hundred five".