22229870 has 32 divisors (see below), whose sum is σ = 43309728. Its totient is φ = 8166528.

The previous prime is 22229849. The next prime is 22229873. The reversal of 22229870 is 7892222.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22229873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39632 + ... + 40188.

It is an arithmetic number, because the mean of its divisors is an integer number (1353429).

Almost surely, 2^22229870 is an apocalyptic number.

22229870 is a deficient number, since it is larger than the sum of its proper divisors (21079858).

22229870 is a wasteful number, since it uses less digits than its factorization.

22229870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22229870 is about 4714.8563074605. The cubic root of 22229870 is about 281.1764699961.

The spelling of 22229870 in words is "twenty-two million, two hundred twenty-nine thousand, eight hundred seventy".