20411000 has 32 divisors (see below), whose sum is σ = 47764080. Its totient is φ = 8164000.

The previous prime is 20410987. The next prime is 20411003. The reversal of 20411000 is 11402.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9206 + ... + 11205.

Almost surely, 2^20411000 is an apocalyptic number.

20411000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20411000 is an abundant number, since it is smaller than the sum of its proper divisors (27353080).

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

20411000 is a wasteful number, since it uses less digits than its factorization.

20411000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432 (or 20418 counting only the distinct ones).

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

The square root of 20411000 is about 4517.8534726129. The cubic root of 20411000 is about 273.2885444492.

Adding to 20411000 its reverse (11402), we get a palindrome (20422402).

The spelling of 20411000 in words is "twenty million, four hundred eleven thousand".