3988572840 has 576 divisors, whose sum is σ = 16135217280. Its totient is φ = 867801600.

The previous prime is 3988572821. The next prime is 3988572859. The reversal of 3988572840 is 482758893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3988572821) and next prime (3988572859).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 65386410 + ... + 65386470.

It is an arithmetic number, because the mean of its divisors is an integer number (28012530).

Almost surely, 2^3988572840 is an apocalyptic number.

3988572840 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 3988572840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8067608640).

3988572840 is an abundant number, since it is smaller than the sum of its proper divisors (12146644440).

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

3988572840 is a wasteful number, since it uses less digits than its factorization.

3988572840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The square root of 3988572840 is about 63155.1489587349. The cubic root of 3988572840 is about 1585.8879863982.

The spelling of 3988572840 in words is "three billion, nine hundred eighty-eight million, five hundred seventy-two thousand, eight hundred forty".