22010040 has 96 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 5416704.

The previous prime is 22010039. The next prime is 22010041. The reversal of 22010040 is 4001022.

It is an interprime number because it is at equal distance from previous prime (22010039) and next prime (22010041).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2329 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^22010040 is an apocalyptic number.

22010040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22010040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

22010040 is an abundant number, since it is smaller than the sum of its proper divisors (55041480).

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

22010040 is a wasteful number, since it uses less digits than its factorization.

22010040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733 (or 4726 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22010040 is about 4691.4859053396. The cubic root of 22010040 is about 280.2465515450.

Adding to 22010040 its reverse (4001022), we get a palindrome (26011062).

The spelling of 22010040 in words is "twenty-two million, ten thousand, forty".