28939181813803 has 8 divisors (see below), whose sum is σ = 28960265703600. Its totient is φ = 28918105331808.

The previous prime is 28939181813771. The next prime is 28939181813831. The reversal of 28939181813803 is 30831818193982.

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 28939181813803 - 2⁵ = 28939181813771 is a prime.

It is a super-2 number, since 2×28939181813803² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28939181813203) 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, 5976100 + ... + 9674302.

It is an arithmetic number, because the mean of its divisors is an integer number (3620033212950).

Almost surely, 2^{28939181813803} is an apocalyptic number.

28939181813803 is a deficient number, since it is larger than the sum of its proper divisors (21083889797).

28939181813803 is a wasteful number, since it uses less digits than its factorization.

28939181813803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703901.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 28939181813803 in words is "twenty-eight trillion, nine hundred thirty-nine billion, one hundred eighty-one million, eight hundred thirteen thousand, eight hundred three".