22276940 has 48 divisors (see below), whose sum is σ = 54782784. Its totient is φ = 7449600.

The previous prime is 22276939. The next prime is 22276963. The reversal of 22276940 is 4967222.

22276940 = 123² + 124² + ... + 409².

It is a junction number, because it is equal to n+sod(n) for n = 22276897 and 22276906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3800 + ... + 7680.

It is an arithmetic number, because the mean of its divisors is an integer number (1141308).

Almost surely, 2^22276940 is an apocalyptic number.

22276940 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 22276940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27391392).

22276940 is an abundant number, since it is smaller than the sum of its proper divisors (32505844).

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

22276940 is a wasteful number, since it uses less digits than its factorization.

22276940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938 (or 3936 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 22276940 is about 4719.8453364491. The cubic root of 22276940 is about 281.3747864366.

The spelling of 22276940 in words is "twenty-two million, two hundred seventy-six thousand, nine hundred forty".