28862121600 has 576 divisors, whose sum is σ = 111966167040. Its totient is φ = 7036968960.

The previous prime is 28862121521. The next prime is 28862121601. The reversal of 28862121600 is 612126882.

28862121600 is a `hidden beast` number, since 2 + 8 + 8 + 6 + 21 + 21 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is not an unprimeable number, because it can be changed into a prime (28862121601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 47548497 + ... + 47549103.

Almost surely, 2^28862121600 is an apocalyptic number.

28862121600 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 28862121600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55983083520).

28862121600 is an abundant number, since it is smaller than the sum of its proper divisors (83104045440).

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

28862121600 is a wasteful number, since it uses less digits than its factorization.

28862121600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 28862121600 in words is "twenty-eight billion, eight hundred sixty-two million, one hundred twenty-one thousand, six hundred".