20090950 has 24 divisors (see below), whose sum is σ = 40767480. Its totient is φ = 7305600.

The previous prime is 20090927. The next prime is 20090951. The reversal of 20090950 is 5909002.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20090951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17715 + ... + 18814.

It is an arithmetic number, because the mean of its divisors is an integer number (1698645).

Almost surely, 2^20090950 is an apocalyptic number.

20090950 is an abundant number, since it is smaller than the sum of its proper divisors (20676530).

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

20090950 is a wasteful number, since it uses less digits than its factorization.

20090950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36552 (or 36547 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 20090950 is about 4482.2929400029. The cubic root of 20090950 is about 271.8525999953.

Adding to 20090950 its reverse (5909002), we get a palindrome (25999952).

The spelling of 20090950 in words is "twenty million, ninety thousand, nine hundred fifty".