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28269014961 = 31117232190887
BaseRepresentation
bin11010010100111101…
…101110111110110001
32200222010010202022010
4122110331232332301
5430343331434321
620553035033133
72020350443145
oct322475567661
980863122263
1028269014961
1110a97138390
12558b29b7a9
13288688a3b5
1415225b9225
15b06ba4676
hex694f6efb1

28269014961 has 32 divisors (see below), whose sum is σ = 45430253568. Its totient is φ = 15423837440.

The previous prime is 28269014959. The next prime is 28269014971. The reversal of 28269014961 is 16941096282.

It is not a de Polignac number, because 28269014961 - 21 = 28269014959 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28269014961.

It is not an unprimeable number, because it can be changed into a prime (28269014911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1082541 + ... + 1108346.

It is an arithmetic number, because the mean of its divisors is an integer number (1419695424).

Almost surely, 228269014961 is an apocalyptic number.

It is an amenable number.

28269014961 is a deficient number, since it is larger than the sum of its proper divisors (17161238607).

28269014961 is a wasteful number, since it uses less digits than its factorization.

28269014961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190941.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 28269014961 in words is "twenty-eight billion, two hundred sixty-nine million, fourteen thousand, nine hundred sixty-one".

Divisors: 1 3 11 17 23 33 51 69 187 253 391 561 759 1173 4301 12903 2190887 6572661 24099757 37245079 50390401 72299271 111735237 151171203 409695869 554294411 856636817 1229087607 1662883233 2569910451 9423004987 28269014961