22219810 has 8 divisors (see below), whose sum is σ = 39995676. Its totient is φ = 8887920.

The previous prime is 22219781. The next prime is 22219823. The reversal of 22219810 is 1891222.

It can be written as a sum of positive squares in 2 ways, for example, as 22099401 + 120409 = 4701^2 + 347^2 .

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

It is a super-2 number, since 2×22219810² = 987439912872200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110981 + ... + 1111000.

Almost surely, 2^22219810 is an apocalyptic number.

22219810 is a deficient number, since it is larger than the sum of its proper divisors (17775866).

22219810 is a wasteful number, since it uses less digits than its factorization.

22219810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221988.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 22219810 is about 4713.7893461630. The cubic root of 22219810 is about 281.1340486641.

The spelling of 22219810 in words is "twenty-two million, two hundred nineteen thousand, eight hundred ten".