Search a number
-
+
28634373 = 32131149163
BaseRepresentation
bin110110100111…
…0110100000101
31222212202222100
41231032310011
524312244443
62501422313
7465250065
oct155166405
958782870
1028634373
1115188479
12970a999
135c17521
143b353a5
1527a93d3
hex1b4ed05

28634373 has 24 divisors (see below), whose sum is σ = 42213600. Its totient is φ = 18701280.

The previous prime is 28634329. The next prime is 28634399. The reversal of 28634373 is 37343682.

28634373 is a `hidden beast` number, since 286 + 3 + 4 + 373 = 666.

It is not a de Polignac number, because 28634373 - 217 = 28503301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234373) 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 23 ways as a sum of consecutive naturals, for example, 175590 + ... + 175752.

It is an arithmetic number, because the mean of its divisors is an integer number (1758900).

Almost surely, 228634373 is an apocalyptic number.

It is an amenable number.

28634373 is a deficient number, since it is larger than the sum of its proper divisors (13579227).

28634373 is a wasteful number, since it uses less digits than its factorization.

28634373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 446 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 28634373 is about 5351.1095111201. The cubic root of 28634373 is about 305.9350432415.

The spelling of 28634373 in words is "twenty-eight million, six hundred thirty-four thousand, three hundred seventy-three".

Divisors: 1 3 9 131 149 163 393 447 489 1179 1341 1467 19519 21353 24287 58557 64059 72861 175671 192177 218583 3181597 9544791 28634373