22405480 has 16 divisors (see below), whose sum is σ = 50412420. Its totient is φ = 8962176.

The previous prime is 22405463. The next prime is 22405499. The reversal of 22405480 is 8450422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18818244 + 3587236 = 4338^2 + 1894^2 .

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, 280029 + ... + 280108.

Almost surely, 2^22405480 is an apocalyptic number.

22405480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22405480 is an abundant number, since it is smaller than the sum of its proper divisors (28006940).

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

22405480 is a wasteful number, since it uses less digits than its factorization.

22405480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560148 (or 560144 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 22405480 is about 4733.4427217407. The cubic root of 22405480 is about 281.9149350256.

The spelling of 22405480 in words is "twenty-two million, four hundred five thousand, four hundred eighty".