402436 has 6 divisors (see below), whose sum is σ = 704270. Its totient is φ = 201216.

The previous prime is 402419. The next prime is 402443. The reversal of 402436 is 634204.

It can be written as a sum of positive squares in only one way, i.e., 360000 + 42436 = 600^2 + 206^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50301 + ... + 50308.

2⁴⁰²⁴³⁶ is an apocalyptic number.

It is an amenable number.

402436 is a deficient number, since it is larger than the sum of its proper divisors (301834).

402436 is a wasteful number, since it uses less digits than its factorization.

402436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100613 (or 100611 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402436 is about 634.3784359513. The cubic root of 402436 is about 73.8298990443.

It can be divided in two parts, 402 and 436, that added together give a palindrome (838).

The spelling of 402436 in words is "four hundred two thousand, four hundred thirty-six".