21200158 has 16 divisors (see below), whose sum is σ = 37923840. Its totient is φ = 8690616.

The previous prime is 21200147. The next prime is 21200171. The reversal of 21200158 is 85100212.

It is a congruent number.

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, 32598 + ... + 33241.

It is an arithmetic number, because the mean of its divisors is an integer number (2370240).

Almost surely, 2^21200158 is an apocalyptic number.

21200158 is a deficient number, since it is larger than the sum of its proper divisors (16723682).

21200158 is a wasteful number, since it uses less digits than its factorization.

21200158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65871.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 21200158 is about 4604.3629309602. The cubic root of 21200158 is about 276.7661882893.

The spelling of 21200158 in words is "twenty-one million, two hundred thousand, one hundred fifty-eight".