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20614748 = 2271166931
BaseRepresentation
bin100111010100…
…0111001011100
31102210100010012
41032220321130
520234132443
62013502352
7340136210
oct116507134
942710105
1020614748
1110700190
126aa19b8
13436a19b
142a48940
151c23118
hex13a8e5c

20614748 has 24 divisors (see below), whose sum is σ = 44978304. Its totient is φ = 8031600.

The previous prime is 20614747. The next prime is 20614771. The reversal of 20614748 is 84741602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20614747) 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 7 ways as a sum of consecutive naturals, for example, 33158 + ... + 33773.

It is an arithmetic number, because the mean of its divisors is an integer number (1874096).

Almost surely, 220614748 is an apocalyptic number.

20614748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20614748 is an abundant number, since it is smaller than the sum of its proper divisors (24363556).

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

20614748 is a wasteful number, since it uses less digits than its factorization.

20614748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66953 (or 66951 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20614748 is about 4540.3466827986. The cubic root of 20614748 is about 274.1948815157.

The spelling of 20614748 in words is "twenty million, six hundred fourteen thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 66931 133862 267724 468517 736241 937034 1472482 1874068 2944964 5153687 10307374 20614748