402838 has 8 divisors (see below), whose sum is σ = 636120. Its totient is φ = 190800.

The previous prime is 402823. The next prime is 402847. The reversal of 402838 is 838204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5263 + ... + 5338.

It is an arithmetic number, because the mean of its divisors is an integer number (79515).

2⁴⁰²⁸³⁸ is an apocalyptic number.

402838 is a deficient number, since it is larger than the sum of its proper divisors (233282).

402838 is a wasteful number, since it uses less digits than its factorization.

402838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 402838 is about 634.6952024397. The cubic root of 402838 is about 73.8544741671.

The spelling of 402838 in words is "four hundred two thousand, eight hundred thirty-eight".