4002635 has 32 divisors (see below), whose sum is σ = 6236160. Its totient is φ = 2395008.

The previous prime is 4002631. The next prime is 4002641. The reversal of 4002635 is 5362004.

It is not a de Polignac number, because 4002635 - 2² = 4002631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4002631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8414 + ... + 8876.

It is an arithmetic number, because the mean of its divisors is an integer number (194880).

Almost surely, 2^4002635 is an apocalyptic number.

4002635 is a deficient number, since it is larger than the sum of its proper divisors (2233525).

4002635 is a wasteful number, since it uses less digits than its factorization.

4002635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 4002635 is about 2000.6586415478. The cubic root of 4002635 is about 158.7749542271.

Adding to 4002635 its reverse (5362004), we get a palindrome (9364639).

The spelling of 4002635 in words is "four million, two thousand, six hundred thirty-five".