22298940 has 108 divisors (see below), whose sum is σ = 70283304. Its totient is φ = 5721408.

The previous prime is 22298933. The next prime is 22298963. The reversal of 22298940 is 4989222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22298895 and 22298904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 332787 + ... + 332853.

Almost surely, 2^22298940 is an apocalyptic number.

22298940 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 22298940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35141652).

22298940 is an abundant number, since it is smaller than the sum of its proper divisors (47984364).

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

22298940 is a wasteful number, since it uses less digits than its factorization.

22298940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22298940 is about 4722.1753461726. The cubic root of 22298940 is about 281.4673815695.

The spelling of 22298940 in words is "twenty-two million, two hundred ninety-eight thousand, nine hundred forty".