403128560 has 20 divisors (see below), whose sum is σ = 937274088. Its totient is φ = 161251392.

The previous prime is 403128493. The next prime is 403128571. The reversal of 403128560 is 65821304.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 2519474 + ... + 2519633.

Almost surely, 2^403128560 is an apocalyptic number.

403128560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403128560 is an abundant number, since it is smaller than the sum of its proper divisors (534145528).

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

403128560 is a wasteful number, since it uses less digits than its factorization.

403128560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039120 (or 5039114 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 403128560 is about 20078.0616594332. The cubic root of 403128560 is about 738.7222654625.

Adding to 403128560 its reverse (65821304), we get a palindrome (468949864).

The spelling of 403128560 in words is "four hundred three million, one hundred twenty-eight thousand, five hundred sixty".