22074840 has 96 divisors (see below), whose sum is σ = 75984480. Its totient is φ = 5538816.

The previous prime is 22074839. The next prime is 22074853. The reversal of 22074840 is 4847022.

It is a super-2 number, since 2×22074840² = 974597122051200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4317 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (791505).

Almost surely, 2^22074840 is an apocalyptic number.

22074840 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 22074840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37992240).

22074840 is an abundant number, since it is smaller than the sum of its proper divisors (53909640).

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

22074840 is a wasteful number, since it uses less digits than its factorization.

22074840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641 (or 3634 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22074840 is about 4698.3869572439. The cubic root of 22074840 is about 280.5213077315.

The spelling of 22074840 in words is "twenty-two million, seventy-four thousand, eight hundred forty".