20682958 has 4 divisors (see below), whose sum is σ = 31024440. Its totient is φ = 10341478.

The previous prime is 20682953. The next prime is 20682973. The reversal of 20682958 is 85928602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20682958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170738 + ... + 5170741.

It is an arithmetic number, because the mean of its divisors is an integer number (7756110).

Almost surely, 2^20682958 is an apocalyptic number.

20682958 is a deficient number, since it is larger than the sum of its proper divisors (10341482).

20682958 is a wasteful number, since it uses less digits than its factorization.

20682958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341481.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 20682958 is about 4547.8520204598. The cubic root of 20682958 is about 274.4969669086.

The spelling of 20682958 in words is "twenty million, six hundred eighty-two thousand, nine hundred fifty-eight".