28338737672 has 16 divisors (see below), whose sum is σ = 60725866560. Its totient is φ = 12145173264.

The previous prime is 28338737663. The next prime is 28338737681. The reversal of 28338737672 is 27673783382.

It is an interprime number because it is at equal distance from previous prime (28338737663) and next prime (28338737681).

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 506048887 = 28338737672 / (2 + 8 + 3 + 3 + 8 + 7 + 3 + 7 + 6 + 7 + 2).

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, 253024388 + ... + 253024499.

It is an arithmetic number, because the mean of its divisors is an integer number (3795366660).

Almost surely, 2^28338737672 is an apocalyptic number.

It is an amenable number.

28338737672 is an abundant number, since it is smaller than the sum of its proper divisors (32387128888).

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

28338737672 is a wasteful number, since it uses less digits than its factorization.

28338737672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506048900 (or 506048896 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 56.

The spelling of 28338737672 in words is "twenty-eight billion, three hundred thirty-eight million, seven hundred thirty-seven thousand, six hundred seventy-two".