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28810624992 = 253300110677
BaseRepresentation
bin11010110101001111…
…110011111111100000
32202100212021101120220
4122311033303333200
5433001004444432
621122503403040
72036645162142
oct326517637740
982325241526
1028810624992
1111244934a86
125700753480
132941b50ac6
1415744c2c92
15b394db72c
hex6b53f3fe0

28810624992 has 24 divisors (see below), whose sum is σ = 75627890856. Its totient is φ = 9603541632.

The previous prime is 28810624981. The next prime is 28810624993. The reversal of 28810624992 is 29942601882.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×288106249922 (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 (28810624993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150055243 + ... + 150055434.

It is an arithmetic number, because the mean of its divisors is an integer number (3151162119).

Almost surely, 228810624992 is an apocalyptic number.

It is an amenable number.

28810624992 is an abundant number, since it is smaller than the sum of its proper divisors (46817265864).

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

28810624992 is a wasteful number, since it uses less digits than its factorization.

28810624992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300110690 (or 300110682 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 28810624992 in words is "twenty-eight billion, eight hundred ten million, six hundred twenty-four thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 300110677 600221354 900332031 1200442708 1800664062 2400885416 3601328124 4801770832 7202656248 9603541664 14405312496 28810624992