402747 has 16 divisors (see below), whose sum is σ = 583200. Its totient is φ = 246272.

The previous prime is 402739. The next prime is 402751. The reversal of 402747 is 747204.

It is a cyclic number.

It is not a de Polignac number, because 402747 - 2³ = 402739 is a prime.

It is an Ulam number.

402747 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402747.

It is not an unprimeable number, because it can be changed into a prime (402757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2629 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (36450).

2⁴⁰²⁷⁴⁷ is an apocalyptic number.

402747 is a deficient number, since it is larger than the sum of its proper divisors (180453).

402747 is a wasteful number, since it uses less digits than its factorization.

402747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 402747 is about 634.6235104375. The cubic root of 402747 is about 73.8489125739.

The spelling of 402747 in words is "four hundred two thousand, seven hundred forty-seven", and thus it is an iban number.