20752950 has 48 divisors (see below), whose sum is σ = 53139456. Its totient is φ = 5354400.

The previous prime is 20752939. The next prime is 20752957. The reversal of 20752950 is 5925702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752957) 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 23 ways as a sum of consecutive naturals, for example, 2419 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1107072).

Almost surely, 2^20752950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20752950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26569728).

20752950 is an abundant number, since it is smaller than the sum of its proper divisors (32386506).

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

20752950 is a wasteful number, since it uses less digits than its factorization.

20752950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509 (or 4504 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 20752950 is about 4555.5405826312. The cubic root of 20752950 is about 274.8062547176.

The spelling of 20752950 in words is "twenty million, seven hundred fifty-two thousand, nine hundred fifty".