28011384152 has 8 divisors (see below), whose sum is σ = 52521345300. Its totient is φ = 14005692072.

The previous prime is 28011384151. The next prime is 28011384173. The reversal of 28011384152 is 25148311082.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28011384152² (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 (28011384151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750711502 + ... + 1750711517.

Almost surely, 2^28011384152 is an apocalyptic number.

It is an amenable number.

28011384152 is a deficient number, since it is larger than the sum of its proper divisors (24509961148).

28011384152 is a wasteful number, since it uses less digits than its factorization.

28011384152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501423025 (or 3501423021 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 28011384152 in words is "twenty-eight billion, eleven million, three hundred eighty-four thousand, one hundred fifty-two".