20411001 has 16 divisors (see below), whose sum is σ = 32565120. Its totient is φ = 12560400.

The previous prime is 20410987. The next prime is 20411003. The reversal of 20411001 is 10011402.

It is a happy number.

It is not a de Polignac number, because 20411001 - 2⁵ = 20410969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20411003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28725 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (2035320).

Almost surely, 2^20411001 is an apocalyptic number.

It is an amenable number.

20411001 is a deficient number, since it is larger than the sum of its proper divisors (12154119).

20411001 is a wasteful number, since it uses less digits than its factorization.

20411001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58173 (or 58167 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20411001 is about 4517.8535832849. The cubic root of 20411001 is about 273.2885489123.

Adding to 20411001 its reverse (10011402), we get a palindrome (30422403).

The spelling of 20411001 in words is "twenty million, four hundred eleven thousand, one".