3537281232 has 120 divisors (see below), whose sum is σ = 10409125440. Its totient is φ = 1150099200.

The previous prime is 3537281213. The next prime is 3537281233. The reversal of 3537281232 is 2321827353.

3537281232 is a `hidden beast` number, since 353 + 7 + 281 + 23 + 2 = 666.

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 (3537281233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 723757 + ... + 728627.

It is an arithmetic number, because the mean of its divisors is an integer number (86742712).

Almost surely, 2^3537281232 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 3537281232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5204562720).

3537281232 is an abundant number, since it is smaller than the sum of its proper divisors (6871844208).

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

3537281232 is a wasteful number, since it uses less digits than its factorization.

3537281232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970 (or 4917 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3537281232 is about 59475.0471374340. The cubic root of 3537281232 is about 1523.6663042719. Note that the first 3 decimals are identical.

The spelling of 3537281232 in words is "three billion, five hundred thirty-seven million, two hundred eighty-one thousand, two hundred thirty-two".