22047540 has 48 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 5676160.

The previous prime is 22047517. The next prime is 22047563. The reversal of 22047540 is 4574022.

It is an interprime number because it is at equal distance from previous prime (22047517) and next prime (22047563).

It is a self number, because there is not a number n which added to its sum of digits gives 22047540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4596 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^22047540 is an apocalyptic number.

22047540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22047540 is an abundant number, since it is smaller than the sum of its proper divisors (41819340).

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

22047540 is a wasteful number, since it uses less digits than its factorization.

22047540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12712 (or 12710 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22047540 is about 4695.4808060517. The cubic root of 22047540 is about 280.4056196019.

The spelling of 22047540 in words is "twenty-two million, forty-seven thousand, five hundred forty".