20926950 has 72 divisors (see below), whose sum is σ = 57095304. Its totient is φ = 5068800.

The previous prime is 20926943. The next prime is 20926957. The reversal of 20926950 is 5962902.

It is an interprime number because it is at equal distance from previous prime (20926943) and next prime (20926957).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20926957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17574 + ... + 18726.

Almost surely, 2^20926950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20926950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28547652).

20926950 is an abundant number, since it is smaller than the sum of its proper divisors (36168354).

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

20926950 is a wasteful number, since it uses less digits than its factorization.

20926950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 20926950 is about 4574.5983430242. The cubic root of 20926950 is about 275.5721421564.

The spelling of 20926950 in words is "twenty million, nine hundred twenty-six thousand, nine hundred fifty".