22747842 has 24 divisors (see below), whose sum is σ = 53078844. Its totient is φ = 6999264.

The previous prime is 22747801. The next prime is 22747843. The reversal of 22747842 is 24874722.

It can be written as a sum of positive squares in 2 ways, for example, as 21427641 + 1320201 = 4629^2 + 1149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22747797 and 22747806.

It is not an unprimeable number, because it can be changed into a prime (22747843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48373 + ... + 48840.

Almost surely, 2^22747842 is an apocalyptic number.

22747842 is an abundant number, since it is smaller than the sum of its proper divisors (30331002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22747842 is a wasteful number, since it uses less digits than its factorization.

22747842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97234 (or 97231 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 22747842 is about 4769.4697818521. The cubic root of 22747842 is about 283.3435957836.

The spelling of 22747842 in words is "twenty-two million, seven hundred forty-seven thousand, eight hundred forty-two".