22742263 has 4 divisors (see below), whose sum is σ = 22763880. Its totient is φ = 22720648.

The previous prime is 22742197. The next prime is 22742273. The reversal of 22742263 is 36224722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22742263 - 2²¹ = 20645111 is a prime.

It is a super-2 number, since 2×22742263² = 1034421052722338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9145 + ... + 11362.

It is an arithmetic number, because the mean of its divisors is an integer number (5690970).

Almost surely, 2^22742263 is an apocalyptic number.

22742263 is a deficient number, since it is larger than the sum of its proper divisors (21617).

22742263 is a wasteful number, since it uses less digits than its factorization.

22742263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21616.

The product of its digits is 8064, while the sum is 28.

The square root of 22742263 is about 4768.8848801371. The cubic root of 22742263 is about 283.3204301698.

Adding to 22742263 its reverse (36224722), we get a palindrome (58966985).

It can be divided in two parts, 22742 and 263, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 22742263 in words is "twenty-two million, seven hundred forty-two thousand, two hundred sixty-three".