20676590 has 32 divisors (see below), whose sum is σ = 42993504. Its totient is φ = 7075840.

The previous prime is 20676589. The next prime is 20676611. The reversal of 20676590 is 9567602.

It is a self number, because there is not a number n which added to its sum of digits gives 20676590.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3659 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (1343547).

Almost surely, 2^20676590 is an apocalyptic number.

20676590 is an abundant number, since it is smaller than the sum of its proper divisors (22316914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20676590 is a wasteful number, since it uses less digits than its factorization.

20676590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11092.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 20676590 is about 4547.1518558324. The cubic root of 20676590 is about 274.4687927292.

The spelling of 20676590 in words is "twenty million, six hundred seventy-six thousand, five hundred ninety".