403040304 has 120 divisors (see below), whose sum is σ = 1160640000. Its totient is φ = 130515840.

The previous prime is 403040303. The next prime is 403040317.

403040304 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (403040303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807447 + ... + 807945.

It is an arithmetic number, because the mean of its divisors is an integer number (9672000).

Almost surely, 2^403040304 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 403040304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580320000).

403040304 is an abundant number, since it is smaller than the sum of its proper divisors (757599696).

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

403040304 is a wasteful number, since it uses less digits than its factorization.

403040304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 403040304 is about 20075.8637174095. The cubic root of 403040304 is about 738.6683526109.

The spelling of 403040304 in words is "four hundred three million, forty thousand, three hundred four".