28204168739 has 8 divisors (see below), whose sum is σ = 28416310272. Its totient is φ = 27992792520.

The previous prime is 28204168717. The next prime is 28204168787. The reversal of 28204168739 is 93786140282.

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

It is a cyclic number.

It is not a de Polignac number, because 28204168739 - 2¹² = 28204164643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28204168799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117239 + ... + 264864.

It is an arithmetic number, because the mean of its divisors is an integer number (3552038784).

Almost surely, 2^28204168739 is an apocalyptic number.

28204168739 is a deficient number, since it is larger than the sum of its proper divisors (212141533).

28204168739 is a wasteful number, since it uses less digits than its factorization.

28204168739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382657.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 28204168739 in words is "twenty-eight billion, two hundred four million, one hundred sixty-eight thousand, seven hundred thirty-nine".