20783950 has 96 divisors (see below), whose sum is σ = 46282752. Its totient is φ = 6864000.

The previous prime is 20783941. The next prime is 20783951. The reversal of 20783950 is 5938702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20783951) 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 47 ways as a sum of consecutive naturals, for example, 392124 + ... + 392176.

It is an arithmetic number, because the mean of its divisors is an integer number (482112).

Almost surely, 2^20783950 is an apocalyptic number.

20783950 is an abundant number, since it is smaller than the sum of its proper divisors (25498802).

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

20783950 is a wasteful number, since it uses less digits than its factorization.

20783950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 20783950 is about 4558.9417631727. The cubic root of 20783950 is about 274.9430184970.

The spelling of 20783950 in words is "twenty million, seven hundred eighty-three thousand, nine hundred fifty".