20442358 has 4 divisors (see below), whose sum is σ = 30663540. Its totient is φ = 10221178.

The previous prime is 20442349. The next prime is 20442397. The reversal of 20442358 is 85324402.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110588 + ... + 5110591.

It is an arithmetic number, because the mean of its divisors is an integer number (7665885).

Almost surely, 2^20442358 is an apocalyptic number.

20442358 is a deficient number, since it is larger than the sum of its proper divisors (10221182).

20442358 is a wasteful number, since it uses less digits than its factorization.

20442358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221181.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 20442358 is about 4521.3225941089. The cubic root of 20442358 is about 273.4284264940.

The spelling of 20442358 in words is "twenty million, four hundred forty-two thousand, three hundred fifty-eight".