28172414732 has 48 divisors (see below), whose sum is σ = 63449917440. Its totient is φ = 10622188800.

The previous prime is 28172414729. The next prime is 28172414737. The reversal of 28172414732 is 23741427182.

It is a self number, because there is not a number n which added to its sum of digits gives 28172414732.

It is not an unprimeable number, because it can be changed into a prime (28172414737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1465757 + ... + 1484852.

It is an arithmetic number, because the mean of its divisors is an integer number (1321873280).

Almost surely, 2^28172414732 is an apocalyptic number.

28172414732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28172414732 is an abundant number, since it is smaller than the sum of its proper divisors (35277502708).

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

28172414732 is a wasteful number, since it uses less digits than its factorization.

28172414732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950662 (or 2950660 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The spelling of 28172414732 in words is "twenty-eight billion, one hundred seventy-two million, four hundred fourteen thousand, seven hundred thirty-two".