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8040844 = 227287173
BaseRepresentation
bin11110101011000110001100
3120010111222001
4132223012030
54024301334
6444202044
7125226460
oct36530614
916114861
108040844
1145a2229
122839324
131886bc6
1410d44a0
15a8c714
hex7ab18c

8040844 has 12 divisors (see below), whose sum is σ = 16081744. Its totient is φ = 3446064.

The previous prime is 8040839. The next prime is 8040853. The reversal of 8040844 is 4480408.

It is a happy number.

8040844 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 287173 = 8040844 / (8 + 0 + 4 + 0 + 8 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143559 + ... + 143614.

Almost surely, 28040844 is an apocalyptic number.

It is an amenable number.

8040844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8040844 is a wasteful number, since it uses less digits than its factorization.

8040844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287184 (or 287182 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 8040844 is about 2835.6381997709. The cubic root of 8040844 is about 200.3397890567.

The spelling of 8040844 in words is "eight million, forty thousand, eight hundred forty-four".

Divisors: 1 2 4 7 14 28 287173 574346 1148692 2010211 4020422 8040844