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28371045 = 3517313797
BaseRepresentation
bin110110000111…
…0100001100101
31222101101202110
41230032201211
524230333140
62452031233
7463102263
oct154164145
958341673
1028371045
111501864a
129602519
135b54701
143aa7433
152756380
hex1b0e865

28371045 has 64 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 13271040.

The previous prime is 28371037. The next prime is 28371053. The reversal of 28371045 is 54017382.

It is an interprime number because it is at equal distance from previous prime (28371037) and next prime (28371053).

It is not a de Polignac number, because 28371045 - 23 = 28371037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 292437 + ... + 292533.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 228371045 is an apocalyptic number.

It is an amenable number.

28371045 is a deficient number, since it is larger than the sum of its proper divisors (23109531).

28371045 is a wasteful number, since it uses less digits than its factorization.

28371045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28371045 is about 5326.4476905345. The cubic root of 28371045 is about 304.9943383344.

The spelling of 28371045 in words is "twenty-eight million, three hundred seventy-one thousand, forty-five".

Divisors: 1 3 5 15 17 31 37 51 85 93 97 111 155 185 255 291 465 485 527 555 629 1147 1455 1581 1649 1887 2635 3007 3145 3441 3589 4947 5735 7905 8245 9021 9435 10767 15035 17205 17945 19499 24735 45105 51119 53835 58497 61013 97495 111259 153357 183039 255595 292485 305065 333777 556295 766785 915195 1668885 1891403 5674209 9457015 28371045