22202540 has 12 divisors (see below), whose sum is σ = 46625376. Its totient is φ = 8881008.

The previous prime is 22202539. The next prime is 22202569. The reversal of 22202540 is 4520222.

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 3 ways as a sum of consecutive naturals, for example, 555044 + ... + 555083.

It is an arithmetic number, because the mean of its divisors is an integer number (3885448).

Almost surely, 2^22202540 is an apocalyptic number.

22202540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202540 is an abundant number, since it is smaller than the sum of its proper divisors (24422836).

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

22202540 is a wasteful number, since it uses less digits than its factorization.

22202540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110136 (or 1110134 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22202540 is about 4711.9571305350. The cubic root of 22202540 is about 281.0611941041.

Adding to 22202540 its reverse (4520222), we get a palindrome (26722762).

The spelling of 22202540 in words is "twenty-two million, two hundred two thousand, five hundred forty".