28903827505 has 16 divisors (see below), whose sum is σ = 40561386624. Its totient is φ = 19358841600.

The previous prime is 28903827497. The next prime is 28903827509. The reversal of 28903827505 is 50572830982.

It is not a de Polignac number, because 28903827505 - 2³ = 28903827497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28903827509) 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, 9601096 + ... + 9604105.

It is an arithmetic number, because the mean of its divisors is an integer number (2535086664).

Almost surely, 2^28903827505 is an apocalyptic number.

It is an amenable number.

28903827505 is a deficient number, since it is larger than the sum of its proper divisors (11657559119).

28903827505 is a wasteful number, since it uses less digits than its factorization.

28903827505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19205256.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 28903827505 in words is "twenty-eight billion, nine hundred three million, eight hundred twenty-seven thousand, five hundred five".