28890333143 has 8 divisors (see below), whose sum is σ = 34453068288. Its totient is φ = 23686484184.

The previous prime is 28890333119. The next prime is 28890333167. The reversal of 28890333143 is 34133309882.

It is an interprime number because it is at equal distance from previous prime (28890333119) and next prime (28890333167).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28890333143 is a prime.

It is a super-2 number, since 2×28890333143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28890333094 and 28890333103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890336143) 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, 89721371 + ... + 89721692.

It is an arithmetic number, because the mean of its divisors is an integer number (4306633536).

Almost surely, 2^28890333143 is an apocalyptic number.

28890333143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28890333143 is a deficient number, since it is larger than the sum of its proper divisors (5562735145).

28890333143 is a wasteful number, since it uses less digits than its factorization.

28890333143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179443093.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 28890333143 in words is "twenty-eight billion, eight hundred ninety million, three hundred thirty-three thousand, one hundred forty-three".