20201010 has 64 divisors (see below), whose sum is σ = 50232960. Its totient is φ = 5196800.

The previous prime is 20200993. The next prime is 20201021. The reversal of 20201010 is 1010202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a self number, because there is not a number n which added to its sum of digits gives 20201010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178714 + ... + 178826.

It is an arithmetic number, because the mean of its divisors is an integer number (784890).

Almost surely, 2^20201010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25116480).

20201010 is an abundant number, since it is smaller than the sum of its proper divisors (30031950).

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

20201010 is a wasteful number, since it uses less digits than its factorization.

20201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 20201010 is about 4494.5533704696. The cubic root of 20201010 is about 272.3481071407.

Adding to 20201010 its reverse (1010202), we get a palindrome (21211212).

The spelling of 20201010 in words is "twenty million, two hundred one thousand, ten".