28402706518 has 4 divisors (see below), whose sum is σ = 42604059780. Its totient is φ = 14201353258.

The previous prime is 28402706477. The next prime is 28402706533. The reversal of 28402706518 is 81560720482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7100676628 + ... + 7100676631.

It is an arithmetic number, because the mean of its divisors is an integer number (10651014945).

Almost surely, 2^28402706518 is an apocalyptic number.

28402706518 is a deficient number, since it is larger than the sum of its proper divisors (14201353262).

28402706518 is a wasteful number, since it uses less digits than its factorization.

28402706518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14201353261.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 28402706518 in words is "twenty-eight billion, four hundred two million, seven hundred six thousand, five hundred eighteen".