20350572 has 48 divisors (see below), whose sum is σ = 52195584. Its totient is φ = 6120000.

The previous prime is 20350559. The next prime is 20350597. The reversal of 20350572 is 27505302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19422 + ... + 20442.

It is an arithmetic number, because the mean of its divisors is an integer number (1087408).

Almost surely, 2^20350572 is an apocalyptic number.

20350572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20350572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26097792).

20350572 is an abundant number, since it is smaller than the sum of its proper divisors (31845012).

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

20350572 is a wasteful number, since it uses less digits than its factorization.

20350572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 20350572 is about 4511.1608262176. The cubic root of 20350572 is about 273.0185821054.

Adding to 20350572 its reverse (27505302), we get a palindrome (47855874).

The spelling of 20350572 in words is "twenty million, three hundred fifty thousand, five hundred seventy-two".