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28964499 = 3431131987
BaseRepresentation
bin110111001111…
…1011010010011
32000111112211020
41232133122103
524403330444
62512450523
7501123414
oct156373223
960445736
1028964499
1115393503
129849a43
136001875
143bbd80b
152822119
hex1b9f693

28964499 has 16 divisors (see below), whose sum is σ = 39887232. Its totient is φ = 18684288.

The previous prime is 28964497. The next prime is 28964539. The reversal of 28964499 is 99446982.

It is a happy number.

It is not a de Polignac number, because 28964499 - 21 = 28964497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28964497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13584 + ... + 15570.

It is an arithmetic number, because the mean of its divisors is an integer number (2492952).

Almost surely, 228964499 is an apocalyptic number.

28964499 is a deficient number, since it is larger than the sum of its proper divisors (10922733).

28964499 is a wasteful number, since it uses less digits than its factorization.

28964499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146.

The product of its digits is 1119744, while the sum is 51.

The square root of 28964499 is about 5381.8676126415. The cubic root of 28964499 is about 307.1062631929.

The spelling of 28964499 in words is "twenty-eight million, nine hundred sixty-four thousand, four hundred ninety-nine".

Divisors: 1 3 43 113 129 339 1987 4859 5961 14577 85441 224531 256323 673593 9654833 28964499