20820652 has 12 divisors (see below), whose sum is σ = 36980440. Its totient is φ = 10254816.

The previous prime is 20820649. The next prime is 20820689. The reversal of 20820652 is 25602802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38577 + ... + 39112.

Almost surely, 2^20820652 is an apocalyptic number.

It is an amenable number.

20820652 is a deficient number, since it is larger than the sum of its proper divisors (16159788).

20820652 is a wasteful number, since it uses less digits than its factorization.

20820652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77760 (or 77758 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20820652 is about 4562.9652639484. The cubic root of 20820652 is about 275.1047622892.

The spelling of 20820652 in words is "twenty million, eight hundred twenty thousand, six hundred fifty-two".