20023950 has 24 divisors (see below), whose sum is σ = 49659768. Its totient is φ = 5339680.

The previous prime is 20023933. The next prime is 20023981. The reversal of 20023950 is 5932002.

It is a super-3 number, since 3×20023950³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66597 + ... + 66896.

It is an arithmetic number, because the mean of its divisors is an integer number (2069157).

Almost surely, 2^20023950 is an apocalyptic number.

20023950 is an abundant number, since it is smaller than the sum of its proper divisors (29635818).

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

20023950 is a wasteful number, since it uses less digits than its factorization.

20023950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133508 (or 133503 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 20023950 is about 4474.8128452484. The cubic root of 20023950 is about 271.5500689415.

Adding to 20023950 its reverse (5932002), we get a palindrome (25955952).

The spelling of 20023950 in words is "twenty million, twenty-three thousand, nine hundred fifty".