13235003720 has 64 divisors (see below), whose sum is σ = 29990062080. Its totient is φ = 5256550656.

The previous prime is 13235003657. The next prime is 13235003767. The reversal of 13235003720 is 2730053231.

It is a self number, because there is not a number n which added to its sum of digits gives 13235003720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4781777 + ... + 4784543.

It is an arithmetic number, because the mean of its divisors is an integer number (468594720).

Almost surely, 2^13235003720 is an apocalyptic number.

13235003720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13235003720 is an abundant number, since it is smaller than the sum of its proper divisors (16755058360).

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

13235003720 is a wasteful number, since it uses less digits than its factorization.

13235003720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

Adding to 13235003720 its reverse (2730053231), we get a palindrome (15965056951).

The spelling of 13235003720 in words is "thirteen billion, two hundred thirty-five million, three thousand, seven hundred twenty".