403841328 has 80 divisors (see below), whose sum is σ = 1141641216. Its totient is φ = 121995520.

The previous prime is 403841323. The next prime is 403841353. The reversal of 403841328 is 823148304.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (403841323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201226 + ... + 203222.

Almost surely, 2^403841328 is an apocalyptic number.

403841328 is a gapful number since it is divisible by the number (48) 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 403841328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570820608).

403841328 is an abundant number, since it is smaller than the sum of its proper divisors (737799888).

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

403841328 is a wasteful number, since it uses less digits than its factorization.

403841328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 403841328 is about 20095.8037410799. The cubic root of 403841328 is about 739.1573851953.

The spelling of 403841328 in words is "four hundred three million, eight hundred forty-one thousand, three hundred twenty-eight".