28090232353 has 16 divisors (see below), whose sum is σ = 30605440464. Its totient is φ = 25673656320.

The previous prime is 28090232309. The next prime is 28090232363. The reversal of 28090232353 is 35323209082.

It can be written as a sum of positive squares in 8 ways, for example, as 302342544 + 27787889809 = 17388^2 + 166697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28090232353 is a prime.

It is a super-2 number, since 2×28090232353² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28090232363) by changing a digit.

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, 284851 + ... + 370567.

It is an arithmetic number, because the mean of its divisors is an integer number (1912840029).

Almost surely, 2^28090232353 is an apocalyptic number.

It is an amenable number.

28090232353 is a deficient number, since it is larger than the sum of its proper divisors (2515208111).

28090232353 is a wasteful number, since it uses less digits than its factorization.

28090232353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86292.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 28090232353 in words is "twenty-eight billion, ninety million, two hundred thirty-two thousand, three hundred fifty-three".