28302833401 has 4 divisors (see below), whose sum is σ = 29967705972. Its totient is φ = 26637960832.

The previous prime is 28302833399. The next prime is 28302833423. The reversal of 28302833401 is 10433820382.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18516677776 + 9786155625 = 136076^2 + 98925^2 .

It is a cyclic number.

It is not a de Polignac number, because 28302833401 - 2¹ = 28302833399 is a prime.

It is a super-2 number, since 2×28302833401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28302833491) 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, 832436260 + ... + 832436293.

It is an arithmetic number, because the mean of its divisors is an integer number (7491926493).

Almost surely, 2^28302833401 is an apocalyptic number.

It is an amenable number.

28302833401 is a deficient number, since it is larger than the sum of its proper divisors (1664872571).

28302833401 is a wasteful number, since it uses less digits than its factorization.

28302833401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664872570.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 28302833401 in words is "twenty-eight billion, three hundred two million, eight hundred thirty-three thousand, four hundred one".