403328440 has 16 divisors (see below), whose sum is σ = 907489080. Its totient is φ = 161331360.

The previous prime is 403328423. The next prime is 403328441. The reversal of 403328440 is 44823304.

It is a junction number, because it is equal to n+sod(n) for n = 403328399 and 403328408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403328441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5041566 + ... + 5041645.

Almost surely, 2^403328440 is an apocalyptic number.

403328440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403328440 is an abundant number, since it is smaller than the sum of its proper divisors (504160640).

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

403328440 is a wasteful number, since it uses less digits than its factorization.

403328440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10083222 (or 10083218 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 403328440 is about 20083.0386147117. The cubic root of 403328440 is about 738.8443368677.

The spelling of 403328440 in words is "four hundred three million, three hundred twenty-eight thousand, four hundred forty".