3721863200 has 108 divisors (see below), whose sum is σ = 9987349050. Its totient is φ = 1353369600.

The previous prime is 3721863179. The next prime is 3721863217. The reversal of 3721863200 is 23681273.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1509477904 + 2212385296 = 38852^2 + 47036^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 77576 + ... + 116024.

Almost surely, 2^3721863200 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 3721863200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4993674525).

3721863200 is an abundant number, since it is smaller than the sum of its proper divisors (6265485850).

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

3721863200 is a wasteful number, since it uses less digits than its factorization.

3721863200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38491 (or 38467 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 3721863200 is about 61007.0749995441. The cubic root of 3721863200 is about 1549.7208238091.

The spelling of 3721863200 in words is "three billion, seven hundred twenty-one million, eight hundred sixty-three thousand, two hundred".