22164890 has 16 divisors (see below), whose sum is σ = 43524000. Its totient is φ = 8059920.

The previous prime is 22164869. The next prime is 22164911. The reversal of 22164890 is 9846122.

It is an interprime number because it is at equal distance from previous prime (22164869) and next prime (22164911).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100640 + ... + 100859.

It is an arithmetic number, because the mean of its divisors is an integer number (2720250).

Almost surely, 2^22164890 is an apocalyptic number.

22164890 is a deficient number, since it is larger than the sum of its proper divisors (21359110).

22164890 is a wasteful number, since it uses less digits than its factorization.

22164890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201517.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 22164890 is about 4707.9602802063. The cubic root of 22164890 is about 280.9022341975.

It can be divided in two parts, 221 and 64890, that multiplied together give a triangular number (14340690 = T₅₃₅₅).

The spelling of 22164890 in words is "twenty-two million, one hundred sixty-four thousand, eight hundred ninety".