20885476 has 6 divisors (see below), whose sum is σ = 36549590. Its totient is φ = 10442736.

The previous prime is 20885471. The next prime is 20885483. The reversal of 20885476 is 67458802.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 576 = 4570^2 + 24^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20885471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610681 + ... + 2610688.

Almost surely, 2^20885476 is an apocalyptic number.

It is an amenable number.

20885476 is a deficient number, since it is larger than the sum of its proper divisors (15664114).

20885476 is a wasteful number, since it uses less digits than its factorization.

20885476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221373 (or 5221371 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 20885476 is about 4570.0630192591. The cubic root of 20885476 is about 275.3899745436.

The spelling of 20885476 in words is "twenty million, eight hundred eighty-five thousand, four hundred seventy-six".