20872654 has 16 divisors (see below), whose sum is σ = 34510896. Its totient is φ = 9388800.

The previous prime is 20872613. The next prime is 20872681. The reversal of 20872654 is 45627802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2757 + ... + 7024.

It is an arithmetic number, because the mean of its divisors is an integer number (2156931).

Almost surely, 2^20872654 is an apocalyptic number.

20872654 is a deficient number, since it is larger than the sum of its proper divisors (13638242).

20872654 is a wasteful number, since it uses less digits than its factorization.

20872654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 20872654 is about 4568.6599785933. The cubic root of 20872654 is about 275.3336072528. Note that the first 3 decimals are identical.

The spelling of 20872654 in words is "twenty million, eight hundred seventy-two thousand, six hundred fifty-four".