28603431460 has 24 divisors (see below), whose sum is σ = 60071058936. Its totient is φ = 11440638720.

The previous prime is 28603431443. The next prime is 28603431463. The reversal of 28603431460 is 6413430682.

It can be written as a sum of positive squares in 4 ways, for example, as 4049795044 + 24553636416 = 63638^2 + 156696^2 .

It is not an unprimeable number, because it can be changed into a prime (28603431463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362350 + ... + 434170.

It is an arithmetic number, because the mean of its divisors is an integer number (2502960789).

Almost surely, 2^28603431460 is an apocalyptic number.

28603431460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28603431460 is an abundant number, since it is smaller than the sum of its proper divisors (31467627476).

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

28603431460 is a wasteful number, since it uses less digits than its factorization.

28603431460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91743 (or 91741 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 28603431460 in words is "twenty-eight billion, six hundred three million, four hundred thirty-one thousand, four hundred sixty".