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28905151763 = 194779409729
BaseRepresentation
bin11010111010111000…
…011001110100010011
32202121110010211221102
4122322320121310103
5433144204324023
621140121415015
72042203510325
oct327270316423
982543124842
1028905151763
1111293228384
12572833a46b
1329585c92c7
141582c8b615
15b4295e628
hex6bae19d13

28905151763 has 16 divisors (see below), whose sum is σ = 31467264000. Its totient is φ = 26461873152.

The previous prime is 28905151757. The next prime is 28905151783. The reversal of 28905151763 is 36715150982.

It is a cyclic number.

It is not a de Polignac number, because 28905151763 - 210 = 28905150739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28905151753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134318 + ... + 275411.

It is an arithmetic number, because the mean of its divisors is an integer number (1966704000).

Almost surely, 228905151763 is an apocalyptic number.

28905151763 is a deficient number, since it is larger than the sum of its proper divisors (2562112237).

28905151763 is a wasteful number, since it uses less digits than its factorization.

28905151763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409874.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 28905151763 in words is "twenty-eight billion, nine hundred five million, one hundred fifty-one thousand, seven hundred sixty-three".

Divisors: 1 19 47 79 893 1501 3713 70547 409729 7784851 19257263 32368591 365887997 615003229 1521323777 28905151763