20200401240 has 128 divisors (see below), whose sum is σ = 62775648000. Its totient is φ = 5193993728.

The previous prime is 20200401229. The next prime is 20200401253. The reversal of 20200401240 is 4210400202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 2874451 + ... + 2881469.

It is an arithmetic number, because the mean of its divisors is an integer number (490434750).

Almost surely, 2^20200401240 is an apocalyptic number.

20200401240 is a gapful number since it is divisible by the number (20) 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 20200401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31387824000).

20200401240 is an abundant number, since it is smaller than the sum of its proper divisors (42575246760).

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

20200401240 is a wasteful number, since it uses less digits than its factorization.

20200401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889 (or 7885 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20200401240 its reverse (4210400202), we get a palindrome (24410801442).

The spelling of 20200401240 in words is "twenty billion, two hundred million, four hundred one thousand, two hundred forty".