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28256250859200 = 26345272133161181
BaseRepresentation
bin1100110110010111010111…
…10010111000111011000000
310201001021022201001022110000
412123023223302320323000
512200422300204443300
6140032424211240000
75644306144300200
oct633135362707300
9121037281038400
1028256250859200
119004454a75561
1232043012a9000
13129c725cb6320
146d987757c400
153400237a1c00
hex19b2ebcb8ec0

28256250859200 has 5040 divisors, whose sum is σ = 137267186504448. Its totient is φ = 5643509760000.

The previous prime is 28256250859157. The next prime is 28256250859201. The reversal of 28256250859200 is 295805265282.

28256250859200 is a `hidden beast` number, since 2 + 8 + 2 + 5 + 62 + 508 + 59 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5040).

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 (28256250859201) by changing a digit.

It is a polite number, since it can be written in 719 ways as a sum of consecutive naturals, for example, 156111883110 + ... + 156111883290.

Almost surely, 228256250859200 is an apocalyptic number.

28256250859200 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 28256250859200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68633593252224).

28256250859200 is an abundant number, since it is smaller than the sum of its proper divisors (109010935645248).

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

28256250859200 is a wasteful number, since it uses less digits than its factorization.

28256250859200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 28256250859200 in words is "twenty-eight trillion, two hundred fifty-six billion, two hundred fifty million, eight hundred fifty-nine thousand, two hundred".