28616620032 has 1152 divisors, whose sum is σ = 117118310400. Its totient is φ = 6715146240.

The previous prime is 28616620009. The next prime is 28616620049. The reversal of 28616620032 is 23002661682.

28616620032 is a `hidden beast` number, since 2 + 8 + 616 + 6 + 2 + 0 + 0 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 608864233 + ... + 608864279.

It is an arithmetic number, because the mean of its divisors is an integer number (101665200).

Almost surely, 2^28616620032 is an apocalyptic number.

28616620032 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 28616620032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58559155200).

28616620032 is an abundant number, since it is smaller than the sum of its proper divisors (88501690368).

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

28616620032 is a wasteful number, since it uses less digits than its factorization.

28616620032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 28616620032 in words is "twenty-eight billion, six hundred sixteen million, six hundred twenty thousand, thirty-two".