28401756726 has 32 divisors (see below), whose sum is σ = 64925676288. Its totient is φ = 8113865760.

The previous prime is 28401756703. The next prime is 28401756749. The reversal of 28401756726 is 62765710482.

It is an interprime number because it is at equal distance from previous prime (28401756703) and next prime (28401756749).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392581 + ... + 459263.

It is an arithmetic number, because the mean of its divisors is an integer number (2028927384).

Almost surely, 2^28401756726 is an apocalyptic number.

28401756726 is an abundant number, since it is smaller than the sum of its proper divisors (36523919562).

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

28401756726 is a wasteful number, since it uses less digits than its factorization.

28401756726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76836.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 28401756726 in words is "twenty-eight billion, four hundred one million, seven hundred fifty-six thousand, seven hundred twenty-six".