22097870 has 8 divisors (see below), whose sum is σ = 39776184. Its totient is φ = 8839144.

The previous prime is 22097851. The next prime is 22097879. The reversal of 22097870 is 7879022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22097870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22097879) 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, 1104884 + ... + 1104903.

It is an arithmetic number, because the mean of its divisors is an integer number (4972023).

Almost surely, 2^22097870 is an apocalyptic number.

22097870 is a deficient number, since it is larger than the sum of its proper divisors (17678314).

22097870 is a wasteful number, since it uses less digits than its factorization.

22097870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209794.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 22097870 is about 4700.8371594855. The cubic root of 22097870 is about 280.6188269038.

The spelling of 22097870 in words is "twenty-two million, ninety-seven thousand, eight hundred seventy".