28301051616 has 48 divisors (see below), whose sum is σ = 75125005200. Its totient is φ = 9327684608.

The previous prime is 28301051567. The next prime is 28301051617. The reversal of 28301051616 is 61615010382.

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

It is a super-2 number, since 2×28301051616² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28301051617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647651 + ... + 1664738.

It is an arithmetic number, because the mean of its divisors is an integer number (1565104275).

Almost surely, 2^28301051616 is an apocalyptic number.

It is an amenable number.

28301051616 is an abundant number, since it is smaller than the sum of its proper divisors (46823953584).

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

28301051616 is a wasteful number, since it uses less digits than its factorization.

28301051616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312491 (or 3312483 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

Adding to 28301051616 its reverse (61615010382), we get a palindrome (89916061998).

The spelling of 28301051616 in words is "twenty-eight billion, three hundred one million, fifty-one thousand, six hundred sixteen".