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7988493 = 319269521
BaseRepresentation
bin11110011110010100001101
3120000212011010
4132132110031
54021112433
6443115433
7124621032
oct36362415
916025133
107988493
114566967
122812b79
131869126
1410bd389
15a7be63
hex79e50d

7988493 has 16 divisors (see below), whose sum is σ = 11275200. Its totient is φ = 5016960.

The previous prime is 7988479. The next prime is 7988503. The reversal of 7988493 is 3948897.

It is not a de Polignac number, because 7988493 - 28 = 7988237 is a prime.

It is a super-2 number, since 2×79884932 = 127632040822098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988413) 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, 15073 + ... + 15593.

It is an arithmetic number, because the mean of its divisors is an integer number (704700).

Almost surely, 27988493 is an apocalyptic number.

It is an amenable number.

7988493 is a deficient number, since it is larger than the sum of its proper divisors (3286707).

7988493 is a wasteful number, since it uses less digits than its factorization.

7988493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its digits is 435456, while the sum is 48.

The square root of 7988493 is about 2826.3922233123. The cubic root of 7988493 is about 199.9040623205.

The spelling of 7988493 in words is "seven million, nine hundred eighty-eight thousand, four hundred ninety-three".

Divisors: 1 3 19 57 269 521 807 1563 5111 9899 15333 29697 140149 420447 2662831 7988493