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7493985 = 33555511
BaseRepresentation
bin11100100101100101100001
3112002201211000
4130211211201
53404301420
6424342213
7120461232
oct34454541
915081730
107493985
114259384
122614969
131725015
14dd1089
159d0690
hex725961

7493985 has 16 divisors (see below), whose sum is σ = 13322880. Its totient is φ = 3996720.

The previous prime is 7493947. The next prime is 7494001. The reversal of 7493985 is 5893947.

It is not a de Polignac number, because 7493985 - 26 = 7493921 is a prime.

It is a super-2 number, since 2×74939852 = 112319622360450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

7493985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7493985.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27621 + ... + 27890.

It is an arithmetic number, because the mean of its divisors is an integer number (832680).

Almost surely, 27493985 is an apocalyptic number.

It is an amenable number.

7493985 is a deficient number, since it is larger than the sum of its proper divisors (5828895).

7493985 is a wasteful number, since it uses less digits than its factorization.

7493985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55525 (or 55519 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 7493985 is about 2737.5143835239. The cubic root of 7493985 is about 195.6910393322.

The spelling of 7493985 in words is "seven million, four hundred ninety-three thousand, nine hundred eighty-five".

Divisors: 1 3 5 9 15 27 45 135 55511 166533 277555 499599 832665 1498797 2497995 7493985