2887690 has 32 divisors (see below), whose sum is σ = 5680080. Its totient is φ = 1050624.

The previous prime is 2887669. The next prime is 2887693. The reversal of 2887690 is 967882.

It can be written as a sum of positive squares in 8 ways, for example, as 1352569 + 1535121 = 1163^2 + 1239^2 .

It is a super-2 number, since 2×2887690² = 16677507072200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2887693) 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, 12496 + ... + 12724.

2^2887690 is an apocalyptic number.

2887690 is a deficient number, since it is larger than the sum of its proper divisors (2792390).

2887690 is a wasteful number, since it uses less digits than its factorization.

2887690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2887690 is about 1699.3204524162. The cubic root of 2887690 is about 142.4022516266.

The spelling of 2887690 in words is "two million, eight hundred eighty-seven thousand, six hundred ninety".