28023023338 has 8 divisors (see below), whose sum is σ = 42168831588. Its totient is φ = 13966746144.

The previous prime is 28023023269. The next prime is 28023023389. The reversal of 28023023338 is 83332032082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26382530329 + 1640493009 = 162427^2 + 40503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22381981 + ... + 22383232.

Almost surely, 2^28023023338 is an apocalyptic number.

28023023338 is a deficient number, since it is larger than the sum of its proper divisors (14145808250).

28023023338 is a wasteful number, since it uses less digits than its factorization.

28023023338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44765528.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 28023023338 in words is "twenty-eight billion, twenty-three million, twenty-three thousand, three hundred thirty-eight".