28995191424 has 48 divisors (see below), whose sum is σ = 83436686970. Its totient is φ = 9665063424.

The previous prime is 28995191387. The next prime is 28995191507. The reversal of 28995191424 is 42419159982.

28995191424 is a `hidden beast` number, since 2 + 8 + 99 + 519 + 14 + 24 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15485313600 + 13509877824 = 124440^2 + 116232^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×28995191424² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12583567 + ... + 12585870.

Almost surely, 2^28995191424 is an apocalyptic number.

28995191424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28995191424 is an abundant number, since it is smaller than the sum of its proper divisors (54441495546).

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

28995191424 is a wasteful number, since it uses less digits than its factorization.

28995191424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25169457 (or 25169442 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 28995191424 in words is "twenty-eight billion, nine hundred ninety-five million, one hundred ninety-one thousand, four hundred twenty-four".