20913652 has 12 divisors (see below), whose sum is σ = 37450336. Its totient is φ = 10213560.

The previous prime is 20913643. The next prime is 20913707. The reversal of 20913652 is 25631902.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20913652.

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, 60624 + ... + 60967.

Almost surely, 2^20913652 is an apocalyptic number.

It is an amenable number.

20913652 is a deficient number, since it is larger than the sum of its proper divisors (16536684).

20913652 is a wasteful number, since it uses less digits than its factorization.

20913652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121638 (or 121636 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20913652 is about 4573.1446511126. The cubic root of 20913652 is about 275.5137591489.

It can be divided in two parts, 209 and 13652, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 20913652 in words is "twenty million, nine hundred thirteen thousand, six hundred fifty-two".