28884185012 has 6 divisors (see below), whose sum is σ = 50547323778. Its totient is φ = 14442092504.

The previous prime is 28884185009. The next prime is 28884185017. The reversal of 28884185012 is 21058148882.

It can be written as a sum of positive squares in only one way, i.e., 18407434276 + 10476750736 = 135674^2 + 102356^2 .

It is a super-2 number, since 2×28884185012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28884185017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610523123 + ... + 3610523130.

It is an arithmetic number, because the mean of its divisors is an integer number (8424553963).

Almost surely, 2^28884185012 is an apocalyptic number.

It is an amenable number.

28884185012 is a deficient number, since it is larger than the sum of its proper divisors (21663138766).

28884185012 is a wasteful number, since it uses less digits than its factorization.

28884185012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221046257 (or 7221046255 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 47.

The spelling of 28884185012 in words is "twenty-eight billion, eight hundred eighty-four million, one hundred eighty-five thousand, twelve".