22102040 has 32 divisors (see below), whose sum is σ = 52656480. Its totient is φ = 8320512.

The previous prime is 22102013. The next prime is 22102051. The reversal of 22102040 is 4020122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15572 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (1645515).

Almost surely, 2^22102040 is an apocalyptic number.

22102040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102040 is an abundant number, since it is smaller than the sum of its proper divisors (30554440).

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

22102040 is a wasteful number, since it uses less digits than its factorization.

22102040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32531 (or 32527 counting only the distinct ones).

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

The square root of 22102040 is about 4701.2806765816. The cubic root of 22102040 is about 280.6364772762.

Adding to 22102040 its reverse (4020122), we get a palindrome (26122162).

The spelling of 22102040 in words is "twenty-two million, one hundred two thousand, forty".