13238845740 has 240 divisors, whose sum is σ = 43088855040. Its totient is φ = 3399096960.

The previous prime is 13238845733. The next prime is 13238845847. The reversal of 13238845740 is 4754883231.

It is a super-2 number, since 2×13238845740² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12002029 + ... + 12003131.

It is an arithmetic number, because the mean of its divisors is an integer number (179536896).

Almost surely, 2^13238845740 is an apocalyptic number.

13238845740 is a gapful number since it is divisible by the number (10) 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 13238845740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21544427520).

13238845740 is an abundant number, since it is smaller than the sum of its proper divisors (29850009300).

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

13238845740 is a wasteful number, since it uses less digits than its factorization.

13238845740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 13238845740 in words is "thirteen billion, two hundred thirty-eight million, eight hundred forty-five thousand, seven hundred forty".