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28214653704 = 2331785381071
BaseRepresentation
bin11010010001101110…
…010111001100001000
32200211022211220200020
4122101232113030020
5430240422404304
620543413540440
72016120412416
oct322156271410
980738756606
1028214653704
1110a69488a26
125575044720
132878535b83
1415192a82b6
15b020175d9
hex691b97308

28214653704 has 64 divisors (see below), whose sum is σ = 74774327040. Its totient is φ = 8841169920.

The previous prime is 28214653703. The next prime is 28214653711. The reversal of 28214653704 is 40735641282.

It is not an unprimeable number, because it can be changed into a prime (28214653703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307489 + ... + 388559.

It is an arithmetic number, because the mean of its divisors is an integer number (1168348860).

Almost surely, 228214653704 is an apocalyptic number.

28214653704 is a gapful number since it is divisible by the number (24) 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 28214653704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37387163520).

28214653704 is an abundant number, since it is smaller than the sum of its proper divisors (46559673336).

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

28214653704 is a wasteful number, since it uses less digits than its factorization.

28214653704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81950 (or 81946 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 28214653704 in words is "twenty-eight billion, two hundred fourteen million, six hundred fifty-three thousand, seven hundred four".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 853 1706 2559 3412 5118 6824 10236 14501 20472 29002 43503 58004 81071 87006 116008 162142 174012 243213 324284 348024 486426 648568 972852 1378207 1945704 2756414 4134621 5512828 8269242 11025656 16538484 33076968 69153563 138307126 207460689 276614252 414921378 553228504 829842756 1175610571 1659685512 2351221142 3526831713 4702442284 7053663426 9404884568 14107326852 28214653704