402634 has 8 divisors (see below), whose sum is σ = 620388. Its totient is φ = 195840.

The previous prime is 402631. The next prime is 402691. The reversal of 402634 is 436204.

402634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 356409 + 46225 = 597^2 + 215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402634² = 324228275912, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (402631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2647 + ... + 2794.

2⁴⁰²⁶³⁴ is an apocalyptic number.

402634 is a deficient number, since it is larger than the sum of its proper divisors (217754).

402634 is a wasteful number, since it uses less digits than its factorization.

402634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480.

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

The square root of 402634 is about 634.5344750287. The cubic root of 402634 is about 73.8420052535.

Adding to 402634 its reverse (436204), we get a palindrome (838838).

The spelling of 402634 in words is "four hundred two thousand, six hundred thirty-four".