22143598 has 4 divisors (see below), whose sum is σ = 33215400. Its totient is φ = 11071798.

The previous prime is 22143587. The next prime is 22143631. The reversal of 22143598 is 89534122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89534122 = 2 ⋅44767061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535898 + ... + 5535901.

It is an arithmetic number, because the mean of its divisors is an integer number (8303850).

Almost surely, 2^22143598 is an apocalyptic number.

22143598 is a deficient number, since it is larger than the sum of its proper divisors (11071802).

22143598 is a wasteful number, since it uses less digits than its factorization.

22143598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11071801.

The product of its digits is 17280, while the sum is 34.

The square root of 22143598 is about 4705.6984603776. The cubic root of 22143598 is about 280.8122587674.

The spelling of 22143598 in words is "twenty-two million, one hundred forty-three thousand, five hundred ninety-eight".