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28753065 = 32511292003
BaseRepresentation
bin110110110101…
…1110010101001
32000002210210100
41231223302221
524330044230
62504140013
7466253115
oct155536251
960083710
1028753065
1115259670
129767609
135c59563
143b66745
1527ce660
hex1b6bca9

28753065 has 48 divisors (see below), whose sum is σ = 56272320. Its totient is φ = 13453440.

The previous prime is 28753057. The next prime is 28753073. The reversal of 28753065 is 56035782.

It is an interprime number because it is at equal distance from previous prime (28753057) and next prime (28753073).

It is not a de Polignac number, because 28753065 - 23 = 28753057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13354 + ... + 15356.

It is an arithmetic number, because the mean of its divisors is an integer number (1172340).

Almost surely, 228753065 is an apocalyptic number.

It is an amenable number.

28753065 is a deficient number, since it is larger than the sum of its proper divisors (27519255).

28753065 is a wasteful number, since it uses less digits than its factorization.

28753065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28753065 is about 5362.1884524884. The cubic root of 28753065 is about 306.3571697672.

The spelling of 28753065 in words is "twenty-eight million, seven hundred fifty-three thousand, sixty-five".

Divisors: 1 3 5 9 11 15 29 33 45 55 87 99 145 165 261 319 435 495 957 1305 1595 2003 2871 4785 6009 10015 14355 18027 22033 30045 58087 66099 90135 110165 174261 198297 290435 330495 522783 638957 871305 991485 1916871 2613915 3194785 5750613 9584355 28753065