28061615232 has 192 divisors, whose sum is σ = 92386132800. Its totient is φ = 8008906752.

The previous prime is 28061615227. The next prime is 28061615279. The reversal of 28061615232 is 23251616082.

28061615232 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 1 + 615 + 2 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12877119 + ... + 12879297.

It is an arithmetic number, because the mean of its divisors is an integer number (481177775).

Almost surely, 2^28061615232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28061615232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46193066400).

28061615232 is an abundant number, since it is smaller than the sum of its proper divisors (64324517568).

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

28061615232 is a wasteful number, since it uses less digits than its factorization.

28061615232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803 (or 3788 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 28061615232 in words is "twenty-eight billion, sixty-one million, six hundred fifteen thousand, two hundred thirty-two".