28404375682 has 4 divisors (see below), whose sum is σ = 42606563526. Its totient is φ = 14202187840.

The previous prime is 28404375653. The next prime is 28404375697. The reversal of 28404375682 is 28657340482.

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

It can be written as a sum of positive squares in only one way, i.e., 26791469761 + 1612905921 = 163681^2 + 40161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7101093919 + ... + 7101093922.

Almost surely, 2^28404375682 is an apocalyptic number.

28404375682 is a deficient number, since it is larger than the sum of its proper divisors (14202187844).

28404375682 is a wasteful number, since it uses less digits than its factorization.

28404375682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14202187843.

The product of its (nonzero) digits is 2580480, while the sum is 49.

The spelling of 28404375682 in words is "twenty-eight billion, four hundred four million, three hundred seventy-five thousand, six hundred eighty-two".