402582 has 16 divisors (see below), whose sum is σ = 811440. Its totient is φ = 133152.

The previous prime is 402581. The next prime is 402583. The reversal of 402582 is 285204.

It is an interprime number because it is at equal distance from previous prime (402581) and next prime (402583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402581) 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, 1228 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (50715).

2⁴⁰²⁵⁸² is an apocalyptic number.

402582 is an abundant number, since it is smaller than the sum of its proper divisors (408858).

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

402582 is a wasteful number, since it uses less digits than its factorization.

402582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 402582 is about 634.4934987847. The cubic root of 402582 is about 73.8388262294.

Adding to 402582 its reverse (285204), we get a palindrome (687786).

The spelling of 402582 in words is "four hundred two thousand, five hundred eighty-two".