3941281428 has 144 divisors (see below), whose sum is σ = 11239441920. Its totient is φ = 1052757504.

The previous prime is 3941281423. The next prime is 3941281433. The reversal of 3941281428 is 8241821493.

It is an interprime number because it is at equal distance from previous prime (3941281423) and next prime (3941281433).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 3941281428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3941281423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4344951 + ... + 4345857.

It is an arithmetic number, because the mean of its divisors is an integer number (78051680).

Almost surely, 2^3941281428 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 3941281428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5619720960).

3941281428 is an abundant number, since it is smaller than the sum of its proper divisors (7298160492).

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

3941281428 is a wasteful number, since it uses less digits than its factorization.

3941281428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1115 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 3941281428 is about 62779.6258988535. The cubic root of 3941281428 is about 1579.5952373416.

The spelling of 3941281428 in words is "three billion, nine hundred forty-one million, two hundred eighty-one thousand, four hundred twenty-eight".