20706552 has 48 divisors (see below), whose sum is σ = 56511000. Its totient is φ = 6849216.

The previous prime is 20706503. The next prime is 20706557. The reversal of 20706552 is 25560702.

20706552 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 655 + 2 = 666.

It is a super-2 number, since 2×20706552² = 857522591457408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8974 + ... + 11042.

Almost surely, 2^20706552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20706552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28255500).

20706552 is an abundant number, since it is smaller than the sum of its proper divisors (35804448).

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

20706552 is a wasteful number, since it uses less digits than its factorization.

20706552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20706552 is about 4550.4452529395. The cubic root of 20706552 is about 274.6013043431.

The spelling of 20706552 in words is "twenty million, seven hundred six thousand, five hundred fifty-two".