20869752 has 32 divisors (see below), whose sum is σ = 54921600. Its totient is φ = 6590304.

The previous prime is 20869721. The next prime is 20869781. The reversal of 20869752 is 25796802.

20869752 = T₂₀₈ + T₂₀₉ + ... + T₅₁₁.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20869752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22428 + ... + 23339.

It is an arithmetic number, because the mean of its divisors is an integer number (1716300).

Almost surely, 2^20869752 is an apocalyptic number.

It is an amenable number.

20869752 is an abundant number, since it is smaller than the sum of its proper divisors (34051848).

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

20869752 is a wasteful number, since it uses less digits than its factorization.

20869752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45795 (or 45791 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20869752 is about 4568.3423689562. The cubic root of 20869752 is about 275.3208464549.

The spelling of 20869752 in words is "twenty million, eight hundred sixty-nine thousand, seven hundred fifty-two".