28400301647 has 16 divisors (see below), whose sum is σ = 28927946880. Its totient is φ = 27877613472.

The previous prime is 28400301641. The next prime is 28400301691. The reversal of 28400301647 is 74610300482.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28400301647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28400301641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11548304 + ... + 11550762.

It is an arithmetic number, because the mean of its divisors is an integer number (1807996680).

Almost surely, 2^28400301647 is an apocalyptic number.

28400301647 is a deficient number, since it is larger than the sum of its proper divisors (527645233).

28400301647 is a wasteful number, since it uses less digits than its factorization.

28400301647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 28400301647 in words is "twenty-eight billion, four hundred million, three hundred one thousand, six hundred forty-seven".