402356 has 24 divisors (see below), whose sum is σ = 765576. Its totient is φ = 184320.

The previous prime is 402343. The next prime is 402359. The reversal of 402356 is 653204.

402356 = T₇₃ + T₇₄ + ... + T₁₄₀.

402356 = 10² + 11² + ... + 106².

It can be written as a sum of positive squares in 4 ways, for example, as 17956 + 384400 = 134^2 + 620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402359) 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, 4100 + ... + 4196.

It is an arithmetic number, because the mean of its divisors is an integer number (31899).

2⁴⁰²³⁵⁶ is an apocalyptic number.

It is an amenable number.

402356 is a deficient number, since it is larger than the sum of its proper divisors (363220).

402356 is a wasteful number, since it uses less digits than its factorization.

402356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 402356 is about 634.3153789717. The cubic root of 402356 is about 73.8250065203.

The spelling of 402356 in words is "four hundred two thousand, three hundred fifty-six".