22143698 has 4 divisors (see below), whose sum is σ = 33215550. Its totient is φ = 11071848.

The previous prime is 22143689. The next prime is 22143743. The reversal of 22143698 is 89634122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 3073009 = 4367^2 + 1753^2 .

It is a super-2 number, since 2×22143698² = 980686722230408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535923 + ... + 5535926.

Almost surely, 2^22143698 is an apocalyptic number.

22143698 is a deficient number, since it is larger than the sum of its proper divisors (11071852).

22143698 is a wasteful number, since it uses less digits than its factorization.

22143698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071851.

The product of its digits is 20736, while the sum is 35.

The square root of 22143698 is about 4705.7090857808. The cubic root of 22143698 is about 280.8126814807.

The spelling of 22143698 in words is "twenty-two million, one hundred forty-three thousand, six hundred ninety-eight".