20020013240 has 16 divisors (see below), whose sum is σ = 45045029880. Its totient is φ = 8008005280.

The previous prime is 20020013239. The next prime is 20020013269. The reversal of 20020013240 is 4231002002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250250126 + ... + 250250205.

Almost surely, 2^20020013240 is an apocalyptic number.

20020013240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020013240 is an abundant number, since it is smaller than the sum of its proper divisors (25025016640).

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

20020013240 is a wasteful number, since it uses less digits than its factorization.

20020013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500500342 (or 500500338 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20020013240 its reverse (4231002002), we get a palindrome (24251015242).

The spelling of 20020013240 in words is "twenty billion, twenty million, thirteen thousand, two hundred forty".