2850639 has 12 divisors (see below), whose sum is σ = 4178328. Its totient is φ = 1727440.

The previous prime is 2850629. The next prime is 2850647. The reversal of 2850639 is 9360582.

2850639 = 7² + 8² + ... + 204².

It is a happy number.

It is not a de Polignac number, because 2850639 - 2⁴ = 2850623 is a prime.

It is a super-2 number, since 2×2850639² = 16252285416642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

2850639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2850619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3564 + ... + 4289.

It is an arithmetic number, because the mean of its divisors is an integer number (348194).

2^2850639 is an apocalyptic number.

2850639 is a deficient number, since it is larger than the sum of its proper divisors (1327689).

2850639 is a wasteful number, since it uses less digits than its factorization.

2850639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7878 (or 7867 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2850639 is about 1688.3835464728. The cubic root of 2850639 is about 141.7905892990.

Adding to 2850639 its reverse (9360582), we get a palindrome (12211221).

The spelling of 2850639 in words is "two million, eight hundred fifty thousand, six hundred thirty-nine".