402824 has 16 divisors (see below), whose sum is σ = 773520. Its totient is φ = 196560.

The previous prime is 402823. The next prime is 402847. The reversal of 402824 is 428204.

402824 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 402796 and 402805.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402824.

It is not an unprimeable number, because it can be changed into a prime (402823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (48345).

2⁴⁰²⁸²⁴ is an apocalyptic number.

It is an amenable number.

402824 is a deficient number, since it is larger than the sum of its proper divisors (370696).

402824 is a wasteful number, since it uses less digits than its factorization.

402824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 402824 is about 634.6841734280. The cubic root of 402824 is about 73.8536185919.

The spelling of 402824 in words is "four hundred two thousand, eight hundred twenty-four".