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28089604470 = 2352655735257
BaseRepresentation
bin11010001010010001…
…010101100101110110
32200111121112202101010
4122022101111211312
5430011414320340
620523145413050
72013041461404
oct321221254566
980447482333
1028089604470
1110a04938654
12553b19a186
132858661945
141506836474
15ae6065b80
hex68a455976

28089604470 has 32 divisors (see below), whose sum is σ = 67419501408. Its totient is φ = 7490066688.

The previous prime is 28089604451. The next prime is 28089604493. The reversal of 28089604470 is 7440698082.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779082 + ... + 814338.

It is an arithmetic number, because the mean of its divisors is an integer number (2106859419).

Almost surely, 228089604470 is an apocalyptic number.

28089604470 is an abundant number, since it is smaller than the sum of its proper divisors (39329896938).

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

28089604470 is a wasteful number, since it uses less digits than its factorization.

28089604470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61824.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 28089604470 in words is "twenty-eight billion, eighty-nine million, six hundred four thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 26557 35257 53114 70514 79671 105771 132785 159342 176285 211542 265570 352570 398355 528855 796710 1057710 936320149 1872640298 2808960447 4681600745 5617920894 9363201490 14044802235 28089604470