3004781 has 8 divisors (see below), whose sum is σ = 3256344. Its totient is φ = 2756160.

The previous prime is 3004759. The next prime is 3004787. The reversal of 3004781 is 1874003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 2992900 = 109^2 + 1730^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3004781 - 2¹⁰ = 3003757 is a prime.

It is a super-2 number, since 2×3004781² = 18057417715922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3004787) 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, 1715 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (407043).

Almost surely, 2^3004781 is an apocalyptic number.

It is an amenable number.

3004781 is a deficient number, since it is larger than the sum of its proper divisors (251563).

3004781 is a wasteful number, since it uses less digits than its factorization.

3004781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 3004781 is about 1733.4304139480. The cubic root of 3004781 is about 144.3015318691.

Adding to 3004781 its reverse (1874003), we get a palindrome (4878784).

The spelling of 3004781 in words is "three million, four thousand, seven hundred eighty-one".