28034953152885 has 128 divisors (see below), whose sum is σ = 58181298831360. Its totient is φ = 12541253856768.

The previous prime is 28034953152883. The next prime is 28034953152919. The reversal of 28034953152885 is 58825135943082.

It is a happy number.

28034953152885 is a `hidden beast` number, since 2 + 8 + 0 + 3 + 49 + 531 + 52 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 28034953152885 - 2¹ = 28034953152883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28034953152883) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 291003334 + ... + 291099656.

It is an arithmetic number, because the mean of its divisors is an integer number (454541397120).

Almost surely, 2^{28034953152885} is an apocalyptic number.

It is an amenable number.

28034953152885 is an abundant number, since it is smaller than the sum of its proper divisors (30146345678475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28034953152885 is a wasteful number, since it uses less digits than its factorization.

28034953152885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102944 (or 102938 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 63.

The spelling of 28034953152885 in words is "twenty-eight trillion, thirty-four billion, nine hundred fifty-three million, one hundred fifty-two thousand, eight hundred eighty-five".