20722654 has 16 divisors (see below), whose sum is σ = 32820480. Its totient is φ = 9785880.

The previous prime is 20722649. The next prime is 20722661. The reversal of 20722654 is 45622702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16219 + ... + 17449.

It is an arithmetic number, because the mean of its divisors is an integer number (2051280).

Almost surely, 2^20722654 is an apocalyptic number.

20722654 is a deficient number, since it is larger than the sum of its proper divisors (12097826).

20722654 is a wasteful number, since it uses less digits than its factorization.

20722654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 20722654 is about 4552.2141865251. The cubic root of 20722654 is about 274.6724651455.

The spelling of 20722654 in words is "twenty million, seven hundred twenty-two thousand, six hundred fifty-four".