3149730 has 48 divisors (see below), whose sum is σ = 8311680. Its totient is φ = 827424.

The previous prime is 3149683. The next prime is 3149747. The reversal of 3149730 is 379413.

It is a junction number, because it is equal to n+sod(n) for n = 3149694 and 3149703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6889 + ... + 7331.

It is an arithmetic number, because the mean of its divisors is an integer number (173160).

Almost surely, 2^3149730 is an apocalyptic number.

3149730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3149730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4155840).

3149730 is an abundant number, since it is smaller than the sum of its proper divisors (5161950).

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

3149730 is a wasteful number, since it uses less digits than its factorization.

3149730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 3149730 is about 1774.7478694169. The cubic root of 3149730 is about 146.5855324904.

The spelling of 3149730 in words is "three million, one hundred forty-nine thousand, seven hundred thirty".