28232205921612 has 1152 divisors, whose sum is σ = 100884425564160. Its totient is φ = 6735633408000.

The previous prime is 28232205921503. The next prime is 28232205921739. The reversal of 28232205921612 is 21612950223282.

28232205921612 is a `hidden beast` number, since 2 + 8 + 2 + 3 + 2 + 2 + 0 + 5 + 9 + 21 + 612 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2737530568 + ... + 2737540880.

It is an arithmetic number, because the mean of its divisors is an integer number (87573286080).

Almost surely, 2^{28232205921612} is an apocalyptic number.

28232205921612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28232205921612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50442212782080).

28232205921612 is an abundant number, since it is smaller than the sum of its proper divisors (72652219642548).

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

28232205921612 is a wasteful number, since it uses less digits than its factorization.

28232205921612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10460 (or 10445 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 28232205921612 in words is "twenty-eight trillion, two hundred thirty-two billion, two hundred five million, nine hundred twenty-one thousand, six hundred twelve".