22245870 has 32 divisors (see below), whose sum is σ = 53602848. Its totient is φ = 5908608.

The previous prime is 22245869. The next prime is 22245889. The reversal of 22245870 is 7854222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 6972 + ... + 9648.

It is an arithmetic number, because the mean of its divisors is an integer number (1675089).

Almost surely, 2^22245870 is an apocalyptic number.

22245870 is an abundant number, since it is smaller than the sum of its proper divisors (31356978).

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

22245870 is a wasteful number, since it uses less digits than its factorization.

22245870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 22245870 is about 4716.5527665871. The cubic root of 22245870 is about 281.2439129547.

The spelling of 22245870 in words is "twenty-two million, two hundred forty-five thousand, eight hundred seventy".