22219730 has 16 divisors (see below), whose sum is σ = 43072344. Its totient is φ = 8204160.

The previous prime is 22219723. The next prime is 22219751. The reversal of 22219730 is 3791222.

It can be written as a sum of positive squares in 4 ways, for example, as 14891881 + 7327849 = 3859^2 + 2707^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 22219730.

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, 85331 + ... + 85590.

Almost surely, 2^22219730 is an apocalyptic number.

22219730 is a deficient number, since it is larger than the sum of its proper divisors (20852614).

22219730 is a wasteful number, since it uses less digits than its factorization.

22219730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170941.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 22219730 is about 4713.7808604134. The cubic root of 22219730 is about 281.1337112662.

The spelling of 22219730 in words is "twenty-two million, two hundred nineteen thousand, seven hundred thirty".