20890846 has 8 divisors (see below), whose sum is σ = 32416920. Its totient is φ = 10085208.

The previous prime is 20890813. The next prime is 20890867. The reversal of 20890846 is 64809802.

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, 180036 + ... + 180151.

It is an arithmetic number, because the mean of its divisors is an integer number (4052115).

Almost surely, 2^20890846 is an apocalyptic number.

20890846 is a deficient number, since it is larger than the sum of its proper divisors (11526074).

20890846 is a wasteful number, since it uses less digits than its factorization.

20890846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360218.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20890846 is about 4570.6505007493. The cubic root of 20890846 is about 275.4135749543.

It can be divided in two parts, 20890 and 846, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 20890846 in words is "twenty million, eight hundred ninety thousand, eight hundred forty-six".