3149640828 has 96 divisors (see below), whose sum is σ = 8452288320. Its totient is φ = 1013575680.

The previous prime is 3149640817. The next prime is 3149640829. The reversal of 3149640828 is 8280469413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3149640829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425850 + ... + 433182.

It is an arithmetic number, because the mean of its divisors is an integer number (88044670).

Almost surely, 2^3149640828 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 3149640828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4226144160).

3149640828 is an abundant number, since it is smaller than the sum of its proper divisors (5302647492).

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

3149640828 is a wasteful number, since it uses less digits than its factorization.

3149640828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7484 (or 7476 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 3149640828 is about 56121.6609518998. The cubic root of 3149640828 is about 1465.8414914978.

The spelling of 3149640828 in words is "three billion, one hundred forty-nine million, six hundred forty thousand, eight hundred twenty-eight".