22452540 has 48 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 5442880.

The previous prime is 22452539. The next prime is 22452553. The reversal of 22452540 is 4525422.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22452540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16350 + ... + 17669.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^22452540 is an apocalyptic number.

22452540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22452540 is an abundant number, since it is smaller than the sum of its proper divisors (46131780).

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

22452540 is a wasteful number, since it uses less digits than its factorization.

22452540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34042 (or 34040 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22452540 is about 4738.4111261055. The cubic root of 22452540 is about 282.1121730695.

Adding to 22452540 its reverse (4525422), we get a palindrome (26977962).

It can be divided in two parts, 2 and 2452540, that added together give a palindrome (2452542).

The spelling of 22452540 in words is "twenty-two million, four hundred fifty-two thousand, five hundred forty".