22015460 has 12 divisors (see below), whose sum is σ = 46232508. Its totient is φ = 8806176.

The previous prime is 22015457. The next prime is 22015519. The reversal of 22015460 is 6451022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3833764 + 18181696 = 1958^2 + 4264^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1100773 = 22015460 / (2 + 2 + 0 + 1 + 5 + 4 + 6 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550367 + ... + 550406.

It is an arithmetic number, because the mean of its divisors is an integer number (3852709).

Almost surely, 2^22015460 is an apocalyptic number.

22015460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22015460 is an abundant number, since it is smaller than the sum of its proper divisors (24217048).

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

22015460 is a wasteful number, since it uses less digits than its factorization.

22015460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100782 (or 1100780 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22015460 is about 4692.0635119316. The cubic root of 22015460 is about 280.2695533454.

Adding to 22015460 its reverse (6451022), we get a palindrome (28466482).

The spelling of 22015460 in words is "twenty-two million, fifteen thousand, four hundred sixty".