13207295928 has 128 divisors (see below), whose sum is σ = 34708403520. Its totient is φ = 4183695360.

The previous prime is 13207295909. The next prime is 13207295947. The reversal of 13207295928 is 82959270231.

It is a Cunningham number, because it is equal to 114923²-1.

It is an interprime number because it is at equal distance from previous prime (13207295909) and next prime (13207295947).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8503600 + ... + 8505152.

Almost surely, 2^13207295928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13207295928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17354201760).

13207295928 is an abundant number, since it is smaller than the sum of its proper divisors (21501107592).

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

13207295928 is a wasteful number, since it uses less digits than its factorization.

13207295928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 13207295928 in words is "thirteen billion, two hundred seven million, two hundred ninety-five thousand, nine hundred twenty-eight".