28696749120 has 448 divisors, whose sum is σ = 109581696000. Its totient is φ = 7027679232.

The previous prime is 28696749097. The next prime is 28696749127. The reversal of 28696749120 is 2194769682.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28696749127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26843946 + ... + 26845014.

It is an arithmetic number, because the mean of its divisors is an integer number (244602000).

Almost surely, 2^28696749120 is an apocalyptic number.

28696749120 is a gapful number since it is divisible by the number (20) 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 28696749120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54790848000).

28696749120 is an abundant number, since it is smaller than the sum of its proper divisors (80884946880).

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

28696749120 is a wasteful number, since it uses less digits than its factorization.

28696749120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 28696749120 in words is "twenty-eight billion, six hundred ninety-six million, seven hundred forty-nine thousand, one hundred twenty".