403056 has 50 divisors (see below), whose sum is σ = 1170312. Its totient is φ = 133920.

The previous prime is 403049. The next prime is 403057. The reversal of 403056 is 650304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403057) by changing a digit.

403056 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1141 + ... + 1451.

2⁴⁰³⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585156).

403056 is an abundant number, since it is smaller than the sum of its proper divisors (767256).

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

403056 is a wasteful number, since it uses less digits than its factorization.

403056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 403056 is about 634.8669151877. The cubic root of 403056 is about 73.8677941386.

The spelling of 403056 in words is "four hundred three thousand, fifty-six".