28143507004 has 12 divisors (see below), whose sum is σ = 52148263104. Its totient is φ = 13244003264.

The previous prime is 28143507001. The next prime is 28143507017. The reversal of 28143507004 is 40070534182.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28143507001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206937484 + ... + 206937619.

It is an arithmetic number, because the mean of its divisors is an integer number (4345688592).

Almost surely, 2^28143507004 is an apocalyptic number.

It is an amenable number.

28143507004 is a deficient number, since it is larger than the sum of its proper divisors (24004756100).

28143507004 is a wasteful number, since it uses less digits than its factorization.

28143507004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413875124 (or 413875122 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 28143507004 in words is "twenty-eight billion, one hundred forty-three million, five hundred seven thousand, four".