20986552 has 16 divisors (see below), whose sum is σ = 39719160. Its totient is φ = 10394784.

The previous prime is 20986531. The next prime is 20986561. The reversal of 20986552 is 25568902.

It is a happy number.

It is a congruent number.

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, 11403 + ... + 13114.

Almost surely, 2^20986552 is an apocalyptic number.

It is an amenable number.

20986552 is a deficient number, since it is larger than the sum of its proper divisors (18732608).

20986552 is a wasteful number, since it uses less digits than its factorization.

20986552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24630 (or 24626 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 20986552 is about 4581.1081628794. The cubic root of 20986552 is about 275.8335129795.

The spelling of 20986552 in words is "twenty million, nine hundred eighty-six thousand, five hundred fifty-two".