2948781 has 16 divisors (see below), whose sum is σ = 4515840. Its totient is φ = 1692720.

The previous prime is 2948779. The next prime is 2948783. The reversal of 2948781 is 1878492.

It is an interprime number because it is at equal distance from previous prime (2948779) and next prime (2948783).

It is not a de Polignac number, because 2948781 - 2¹ = 2948779 is a prime.

It is a super-2 number, since 2×2948781² = 17390618771922, which contains 22 as substring.

2948781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2948783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725 + ... + 2978.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

2^2948781 is an apocalyptic number.

It is an amenable number.

2948781 is a deficient number, since it is larger than the sum of its proper divisors (1567059).

2948781 is a wasteful number, since it uses less digits than its factorization.

2948781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736.

The product of its digits is 32256, while the sum is 39.

The square root of 2948781 is about 1717.2015024452. The cubic root of 2948781 is about 143.3994569013.

The spelling of 2948781 in words is "two million, nine hundred forty-eight thousand, seven hundred eighty-one".