28841247644 has 24 divisors (see below), whose sum is σ = 55065452400. Its totient is φ = 13108494080.

The previous prime is 28841247587. The next prime is 28841247653. The reversal of 28841247644 is 44674214882.

It is a junction number, because it is equal to n+sod(n) for n = 28841247592 and 28841247601.

It is a congruent number.

It is an unprimeable number.

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, 650372 + ... + 693300.

It is an arithmetic number, because the mean of its divisors is an integer number (2294393850).

Almost surely, 2^28841247644 is an apocalyptic number.

It is an amenable number.

28841247644 is a deficient number, since it is larger than the sum of its proper divisors (26224204756).

28841247644 is a wasteful number, since it uses less digits than its factorization.

28841247644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58213 (or 58211 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 50.

The spelling of 28841247644 in words is "twenty-eight billion, eight hundred forty-one million, two hundred forty-seven thousand, six hundred forty-four".