20682544 has 10 divisors (see below), whose sum is σ = 40072460. Its totient is φ = 10341264.

The previous prime is 20682517. The next prime is 20682547. The reversal of 20682544 is 44528602.

It is not an unprimeable number, because it can be changed into a prime (20682547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646314 + ... + 646345.

It is an arithmetic number, because the mean of its divisors is an integer number (4007246).

Almost surely, 2^20682544 is an apocalyptic number.

It is an amenable number.

20682544 is a deficient number, since it is larger than the sum of its proper divisors (19389916).

20682544 is a wasteful number, since it uses less digits than its factorization.

20682544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292667 (or 1292661 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 20682544 is about 4547.8065042392. The cubic root of 20682544 is about 274.4951354088.

The spelling of 20682544 in words is "twenty million, six hundred eighty-two thousand, five hundred forty-four".