20000004240 has 40 divisors (see below), whose sum is σ = 62000013888. Its totient is φ = 5333334400.

The previous prime is 20000004239. The next prime is 20000004259. The reversal of 20000004240 is 4240000002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41666436 + ... + 41666915.

Almost surely, 2^20000004240 is an apocalyptic number.

20000004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000004240 is an abundant number, since it is smaller than the sum of its proper divisors (42000009648).

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

20000004240 is a wasteful number, since it uses less digits than its factorization.

20000004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83333367 (or 83333361 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20000004240 its reverse (4240000002), we get a palindrome (24240004242).

The spelling of 20000004240 in words is "twenty billion, four thousand, two hundred forty".