2861004 has 12 divisors (see below), whose sum is σ = 6675704. Its totient is φ = 953664.

The previous prime is 2860999. The next prime is 2861009. The reversal of 2861004 is 4001682.

It is an interprime number because it is at equal distance from previous prime (2860999) and next prime (2861009).

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2861009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119197 + ... + 119220.

2^2861004 is an apocalyptic number.

It is an amenable number.

2861004 is an abundant number, since it is smaller than the sum of its proper divisors (3814700).

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

2861004 is a wasteful number, since it uses less digits than its factorization.

2861004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238424 (or 238422 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2861004 is about 1691.4502653049. The cubic root of 2861004 is about 141.9622328974.

Adding to 2861004 its reverse (4001682), we get a palindrome (6862686).

The spelling of 2861004 in words is "two million, eight hundred sixty-one thousand, four".