20401050 has 48 divisors (see below), whose sum is σ = 50880672. Its totient is φ = 5409600.

The previous prime is 20401033. The next prime is 20401057. The reversal of 20401050 is 5010402.

It is a super-2 number, since 2×20401050² = 832405682205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20401057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41305 + ... + 41795.

It is an arithmetic number, because the mean of its divisors is an integer number (1060014).

Almost surely, 2^20401050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20401050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25440336).

20401050 is an abundant number, since it is smaller than the sum of its proper divisors (30479622).

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

20401050 is a wasteful number, since it uses less digits than its factorization.

20401050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20401050 is about 4516.7521517126. The cubic root of 20401050 is about 273.2441294606.

Adding to 20401050 its reverse (5010402), we get a palindrome (25411452).

The spelling of 20401050 in words is "twenty million, four hundred one thousand, fifty".