22477240 has 16 divisors (see below), whose sum is σ = 50573880. Its totient is φ = 8990880.

The previous prime is 22477229. The next prime is 22477243. The reversal of 22477240 is 4277422.

It is a junction number, because it is equal to n+sod(n) for n = 22477199 and 22477208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22477243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280926 + ... + 281005.

Almost surely, 2^22477240 is an apocalyptic number.

22477240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22477240 is an abundant number, since it is smaller than the sum of its proper divisors (28096640).

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

22477240 is a wasteful number, since it uses less digits than its factorization.

22477240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561942 (or 561938 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 22477240 is about 4741.0167685846. The cubic root of 22477240 is about 282.2155855270.

The spelling of 22477240 in words is "twenty-two million, four hundred seventy-seven thousand, two hundred forty".