402378 has 16 divisors (see below), whose sum is σ = 811200. Its totient is φ = 133056.

The previous prime is 402371. The next prime is 402379. The reversal of 402378 is 873204.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402371) 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, 1026 + ... + 1362.

It is an arithmetic number, because the mean of its divisors is an integer number (50700).

2⁴⁰²³⁷⁸ is an apocalyptic number.

402378 is an abundant number, since it is smaller than the sum of its proper divisors (408822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402378 is a wasteful number, since it uses less digits than its factorization.

402378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 402378 is about 634.3327202660. The cubic root of 402378 is about 73.8263520290.

It can be divided in two parts, 402 and 378, that added together give a triangular number (780 = T₃₉).

The spelling of 402378 in words is "four hundred two thousand, three hundred seventy-eight".