403401504 has 96 divisors (see below), whose sum is σ = 1171243584. Its totient is φ = 120545280.

The previous prime is 403401487. The next prime is 403401511. The reversal of 403401504 is 405104304.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74472 + ... + 79704.

It is an arithmetic number, because the mean of its divisors is an integer number (12200454).

Almost surely, 2^403401504 is an apocalyptic number.

403401504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403401504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585621792).

403401504 is an abundant number, since it is smaller than the sum of its proper divisors (767842080).

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

403401504 is a wasteful number, since it uses less digits than its factorization.

403401504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5322 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 403401504 is about 20084.8575797789. The cubic root of 403401504 is about 738.8889487009. Note that the first 3 decimals are identical.

Adding to 403401504 its reverse (405104304), we get a palindrome (808505808).

The spelling of 403401504 in words is "four hundred three million, four hundred one thousand, five hundred four".