20953350 has 192 divisors, whose sum is σ = 67495680. Its totient is φ = 4723200.

The previous prime is 20953321. The next prime is 20953351. The reversal of 20953350 is 5335902.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20953351) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 252409 + ... + 252491.

It is an arithmetic number, because the mean of its divisors is an integer number (351540).

Almost surely, 2^20953350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20953350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33747840).

20953350 is an abundant number, since it is smaller than the sum of its proper divisors (46542330).

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

20953350 is a wasteful number, since it uses less digits than its factorization.

20953350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 20953350 is about 4577.4829327918. The cubic root of 20953350 is about 275.6879744116.

It can be divided in two parts, 2095 and 3350, that added together give a palindrome (5445).

The spelling of 20953350 in words is "twenty million, nine hundred fifty-three thousand, three hundred fifty".