28233633401 has 4 divisors (see below), whose sum is σ = 28996704612. Its totient is φ = 27470562192.

The previous prime is 28233633397. The next prime is 28233633403. The reversal of 28233633401 is 10433633282.

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 9717227776 + 18516405625 = 98576^2 + 136075^2 .

It is a cyclic number.

It is not a de Polignac number, because 28233633401 - 2² = 28233633397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28233633403) 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 3 ways as a sum of consecutive naturals, for example, 381535550 + ... + 381535623.

It is an arithmetic number, because the mean of its divisors is an integer number (7249176153).

Almost surely, 2^28233633401 is an apocalyptic number.

It is an amenable number.

28233633401 is a deficient number, since it is larger than the sum of its proper divisors (763071211).

28233633401 is an equidigital number, since it uses as much as digits as its factorization.

28233633401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763071210.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 28233633401 in words is "twenty-eight billion, two hundred thirty-three million, six hundred thirty-three thousand, four hundred one".