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8018997 = 3737793
BaseRepresentation
bin11110100101110000110101
3120002101222220
4132211300311
54023101442
6443512553
7125106000
oct36456065
916071886
108018997
114587878
122828759
131879c8c
1410ca537
15a85eec
hex7a5c35

8018997 has 16 divisors (see below), whose sum is σ = 12470400. Its totient is φ = 4581696.

The previous prime is 8018981. The next prime is 8019001. The reversal of 8018997 is 7998108.

It is not a de Polignac number, because 8018997 - 24 = 8018981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8018947) 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, 2868 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (779400).

Almost surely, 28018997 is an apocalyptic number.

It is an amenable number.

8018997 is a deficient number, since it is larger than the sum of its proper divisors (4451403).

8018997 is an equidigital number, since it uses as much as digits as its factorization.

8018997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 8018997 is about 2831.7833603579. The cubic root of 8018997 is about 200.1581831907.

The spelling of 8018997 in words is "eight million, eighteen thousand, nine hundred ninety-seven".

Divisors: 1 3 7 21 49 147 343 1029 7793 23379 54551 163653 381857 1145571 2672999 8018997