1328274013500 has 576 divisors, whose sum is σ = 5110756245504. Its totient is φ = 283481856000.

The previous prime is 1328274013499. The next prime is 1328274013501. The reversal of 1328274013500 is 53104728231.

1328274013500 is a `hidden beast` number, since 1 + 3 + 2 + 82 + 74 + 0 + 1 + 3 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (1328274013499) and next prime (1328274013501).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328274013501) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 67998735 + ... + 68018265.

It is an arithmetic number, because the mean of its divisors is an integer number (8872840704).

Almost surely, 2^{1328274013500} is an apocalyptic number.

1328274013500 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 1328274013500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2555378122752).

1328274013500 is an abundant number, since it is smaller than the sum of its proper divisors (3782482232004).

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

1328274013500 is a wasteful number, since it uses less digits than its factorization.

1328274013500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707 (or 19692 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 1328274013500 in words is "one trillion, three hundred twenty-eight billion, two hundred seventy-four million, thirteen thousand, five hundred".