2951728 has 40 divisors (see below), whose sum is σ = 6437088. Its totient is φ = 1300992.

The previous prime is 2951723. The next prime is 2951731. The reversal of 2951728 is 8271592.

It is a junction number, because it is equal to n+sod(n) for n = 2951693 and 2951702.

It is not an unprimeable number, because it can be changed into a prime (2951723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4476 + ... + 5092.

2^2951728 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 2951728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3218544).

2951728 is an abundant number, since it is smaller than the sum of its proper divisors (3485360).

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

2951728 is a wasteful number, since it uses less digits than its factorization.

2951728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 655 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 2951728 is about 1718.0593703362. The cubic root of 2951728 is about 143.4472119450.

The spelling of 2951728 in words is "two million, nine hundred fifty-one thousand, seven hundred twenty-eight".