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28500495 = 3515112583
BaseRepresentation
bin110110010111…
…0001000001111
31222121222022220
41230232020033
524244003440
62454510423
7464151552
oct154561017
958558286
1028500495
11150a6931
129665413
135b9b5ca
143adc699
15277e8d0
hex1b2e20f

28500495 has 16 divisors (see below), whose sum is σ = 45906432. Its totient is φ = 15098400.

The previous prime is 28500469. The next prime is 28500499. The reversal of 28500495 is 59400582.

It is not a de Polignac number, because 28500495 - 25 = 28500463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28500499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (2869152).

Almost surely, 228500495 is an apocalyptic number.

28500495 is a deficient number, since it is larger than the sum of its proper divisors (17405937).

28500495 is a wasteful number, since it uses less digits than its factorization.

28500495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12742.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 28500495 is about 5338.5854868120. The cubic root of 28500495 is about 305.4575056322.

The spelling of 28500495 in words is "twenty-eight million, five hundred thousand, four hundred ninety-five".

Divisors: 1 3 5 15 151 453 755 2265 12583 37749 62915 188745 1900033 5700099 9500165 28500495