402088 has 8 divisors (see below), whose sum is σ = 753930. Its totient is φ = 201040.

The previous prime is 402071. The next prime is 402089. The reversal of 402088 is 880204.

402088 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 only one way, i.e., 381924 + 20164 = 618^2 + 142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (402089) by changing a digit.

402088 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 25123 + ... + 25138.

2⁴⁰²⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

402088 is a deficient number, since it is larger than the sum of its proper divisors (351842).

402088 is a wasteful number, since it uses less digits than its factorization.

402088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50267 (or 50263 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 402088 is about 634.1040924012. The cubic root of 402088 is about 73.8086118382.

The spelling of 402088 in words is "four hundred two thousand, eighty-eight".