20850590 has 8 divisors (see below), whose sum is σ = 37531080. Its totient is φ = 8340232.

The previous prime is 20850589. The next prime is 20850607. The reversal of 20850590 is 9505802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042520 + ... + 1042539.

It is an arithmetic number, because the mean of its divisors is an integer number (4691385).

Almost surely, 2^20850590 is an apocalyptic number.

20850590 is a deficient number, since it is larger than the sum of its proper divisors (16680490).

20850590 is a wasteful number, since it uses less digits than its factorization.

20850590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085066.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 20850590 is about 4566.2446277001. The cubic root of 20850590 is about 275.2365567846.

The spelling of 20850590 in words is "twenty million, eight hundred fifty thousand, five hundred ninety".