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28855416830 = 2521194114533
BaseRepresentation
bin11010110111111010…
…101011011111111110
32202110222120001102212
4122313322223133332
5433043441314310
621131143420422
72041030665452
oct326772533776
982428501385
1028855416830
1111268148829
125713754712
13294b204756
14157a422662
15b3d3d8205
hex6b7eab7fe

28855416830 has 32 divisors (see below), whose sum is σ = 52244962848. Its totient is φ = 11474467200.

The previous prime is 28855416829. The next prime is 28855416893. The reversal of 28855416830 is 3861455882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1978244 + ... + 1992776.

It is an arithmetic number, because the mean of its divisors is an integer number (1632655089).

Almost surely, 228855416830 is an apocalyptic number.

28855416830 is a deficient number, since it is larger than the sum of its proper divisors (23389546018).

28855416830 is a wasteful number, since it uses less digits than its factorization.

28855416830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692.

The product of its (nonzero) digits is 1843200, while the sum is 50.

The spelling of 28855416830 in words is "twenty-eight billion, eight hundred fifty-five million, four hundred sixteen thousand, eight hundred thirty".

Divisors: 1 2 5 10 211 422 941 1055 1882 2110 4705 9410 14533 29066 72665 145330 198551 397102 992755 1985510 3066463 6132926 13675553 15332315 27351106 30664630 68377765 136755530 2885541683 5771083366 14427708415 28855416830