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8248989 = 37392809
BaseRepresentation
bin11111011101111010011101
3120112002111010
4133131322131
54102431424
6452445433
7130054350
oct37357235
916462433
108248989
114724651
122919879
13192a878
14114a297
15ace229
hex7dde9d

8248989 has 8 divisors (see below), whose sum is σ = 12569920. Its totient is φ = 4713696.

The previous prime is 8248987. The next prime is 8249009. The reversal of 8248989 is 9898428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8248989 - 21 = 8248987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8248987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196384 + ... + 196425.

It is an arithmetic number, because the mean of its divisors is an integer number (1571240).

Almost surely, 28248989 is an apocalyptic number.

It is an amenable number.

8248989 is a deficient number, since it is larger than the sum of its proper divisors (4320931).

8248989 is a wasteful number, since it uses less digits than its factorization.

8248989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392819.

The product of its digits is 331776, while the sum is 48.

The square root of 8248989 is about 2872.1053253667. The cubic root of 8248989 is about 202.0537467673.

The spelling of 8248989 in words is "eight million, two hundred forty-eight thousand, nine hundred eighty-nine".

Divisors: 1 3 7 21 392809 1178427 2749663 8248989