403233440 has 48 divisors (see below), whose sum is σ = 959545440. Its totient is φ = 160124160.

The previous prime is 403233433. The next prime is 403233469. The reversal of 403233440 is 44332304.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13175 + ... + 31305.

It is an arithmetic number, because the mean of its divisors is an integer number (19990530).

Almost surely, 2^403233440 is an apocalyptic number.

403233440 is a gapful number since it is divisible by the number (40) 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 403233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479772720).

403233440 is an abundant number, since it is smaller than the sum of its proper divisors (556312000).

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

403233440 is a wasteful number, since it uses less digits than its factorization.

403233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285 (or 18277 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 403233440 is about 20080.6732954849. The cubic root of 403233440 is about 738.7863231692.

Adding to 403233440 its reverse (44332304), we get a palindrome (447565744).

The spelling of 403233440 in words is "four hundred three million, two hundred thirty-three thousand, four hundred forty".