3802821915240 has 128 divisors (see below), whose sum is σ = 12680605468800. Its totient is φ = 1013723251200.

The previous prime is 3802821915199. The next prime is 3802821915241. The reversal of 3802821915240 is 425191282083.

3802821915240 is a `hidden beast` number, since 3 + 80 + 28 + 21 + 9 + 1 + 524 + 0 = 666.

It is a super-2 number, since 2×3802821915240² (a number of 26 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (3802821915241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2399140 + ... + 3655340.

It is an arithmetic number, because the mean of its divisors is an integer number (99067230225).

Almost surely, 2^{3802821915240} is an apocalyptic number.

3802821915240 is a gapful number since it is divisible by the number (30) 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 3802821915240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6340302734400).

3802821915240 is an abundant number, since it is smaller than the sum of its proper divisors (8877783553560).

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

3802821915240 is a wasteful number, since it uses less digits than its factorization.

3802821915240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259024 (or 1259014 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 3802821915240 in words is "three trillion, eight hundred two billion, eight hundred twenty-one million, nine hundred fifteen thousand, two hundred forty".