22298140 has 12 divisors (see below), whose sum is σ = 46826136. Its totient is φ = 8919248.

The previous prime is 22298131. The next prime is 22298141. The reversal of 22298140 is 4189222.

It is a junction number, because it is equal to n+sod(n) for n = 22298099 and 22298108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22298141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557434 + ... + 557473.

It is an arithmetic number, because the mean of its divisors is an integer number (3902178).

Almost surely, 2^22298140 is an apocalyptic number.

22298140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22298140 is an abundant number, since it is smaller than the sum of its proper divisors (24527996).

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

22298140 is a wasteful number, since it uses less digits than its factorization.

22298140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114916 (or 1114914 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22298140 is about 4722.0906386896. The cubic root of 22298140 is about 281.4640155410.

The spelling of 22298140 in words is "twenty-two million, two hundred ninety-eight thousand, one hundred forty".