22210040 has 16 divisors (see below), whose sum is σ = 49972680. Its totient is φ = 8884000.

The previous prime is 22210033. The next prime is 22210049. The reversal of 22210040 is 4001222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210049) 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, 277586 + ... + 277665.

Almost surely, 2^22210040 is an apocalyptic number.

22210040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22210040 is an abundant number, since it is smaller than the sum of its proper divisors (27762640).

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

22210040 is a wasteful number, since it uses less digits than its factorization.

22210040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555262 (or 555258 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22210040 is about 4712.7529109853. The cubic root of 22210040 is about 281.0928379558.

Adding to 22210040 its reverse (4001222), we get a palindrome (26211262).

The spelling of 22210040 in words is "twenty-two million, two hundred ten thousand, forty".