28226790693503 has 4 divisors (see below), whose sum is σ = 29887190146080. Its totient is φ = 26566391240928.

The previous prime is 28226790693487. The next prime is 28226790693527. The reversal of 28226790693503 is 30539609762282.

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

It is a cyclic number.

It is not a de Polignac number, because 28226790693503 - 2⁴ = 28226790693487 is a prime.

It is a super-2 number, since 2×28226790693503² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28226790693403) 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, 830199726263 + ... + 830199726296.

It is an arithmetic number, because the mean of its divisors is an integer number (7471797536520).

Almost surely, 2^{28226790693503} is an apocalyptic number.

28226790693503 is a deficient number, since it is larger than the sum of its proper divisors (1660399452577).

28226790693503 is a wasteful number, since it uses less digits than its factorization.

28226790693503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660399452576.

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 28226790693503 in words is "twenty-eight trillion, two hundred twenty-six billion, seven hundred ninety million, six hundred ninety-three thousand, five hundred three".