20704554 has 48 divisors (see below), whose sum is σ = 50424192. Its totient is φ = 6092064.

The previous prime is 20704529. The next prime is 20704561. The reversal of 20704554 is 45540702.

20704554 = 1256² + 1257² + ... + 1268².

20704554 is a `hidden beast` number, since 207 + 0 + 455 + 4 = 666.

20704554 is a modest number, since divided by 4554 gives 2070 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3459 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (1050504).

Almost surely, 2^20704554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20704554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25212096).

20704554 is an abundant number, since it is smaller than the sum of its proper divisors (29719638).

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

20704554 is a wasteful number, since it uses less digits than its factorization.

20704554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 3888 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20704554 is about 4550.2257086874. The cubic root of 20704554 is about 274.5924718561.

The spelling of 20704554 in words is "twenty million, seven hundred four thousand, five hundred fifty-four".