20752949 has 8 divisors (see below), whose sum is σ = 23748480. Its totient is φ = 17765136.

The previous prime is 20752939. The next prime is 20752957. The reversal of 20752949 is 94925702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20752949 - 2⁴ = 20752933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6047 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2968560).

Almost surely, 2^20752949 is an apocalyptic number.

It is an amenable number.

20752949 is a deficient number, since it is larger than the sum of its proper divisors (2995531).

20752949 is a wasteful number, since it uses less digits than its factorization.

20752949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 20752949 is about 4555.5404728748. The cubic root of 20752949 is about 274.8062503037.

The spelling of 20752949 in words is "twenty million, seven hundred fifty-two thousand, nine hundred forty-nine".