20852408 has 8 divisors (see below), whose sum is σ = 39098280. Its totient is φ = 10426200.

The previous prime is 20852407. The next prime is 20852411. The reversal of 20852408 is 80425802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303268 + ... + 1303283.

It is an arithmetic number, because the mean of its divisors is an integer number (4887285).

Almost surely, 2^20852408 is an apocalyptic number.

It is an amenable number.

20852408 is a deficient number, since it is larger than the sum of its proper divisors (18245872).

20852408 is a wasteful number, since it uses less digits than its factorization.

20852408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606557 (or 2606553 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20852408 is about 4566.4436928533. The cubic root of 20852408 is about 275.2445560069.

The spelling of 20852408 in words is "twenty million, eight hundred fifty-two thousand, four hundred eight".