403128552 has 16 divisors (see below), whose sum is σ = 1007821440. Its totient is φ = 134376176.

The previous prime is 403128493. The next prime is 403128571. The reversal of 403128552 is 255821304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8398488 + ... + 8398535.

It is an arithmetic number, because the mean of its divisors is an integer number (62988840).

Almost surely, 2^403128552 is an apocalyptic number.

It is an amenable number.

403128552 is an abundant number, since it is smaller than the sum of its proper divisors (604692888).

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

403128552 is a wasteful number, since it uses less digits than its factorization.

403128552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16797032 (or 16797028 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 403128552 is about 20078.0614602107. The cubic root of 403128552 is about 738.7222605759.

Adding to 403128552 its reverse (255821304), we get a palindrome (658949856).

The spelling of 403128552 in words is "four hundred three million, one hundred twenty-eight thousand, five hundred fifty-two".