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20152753 = 37618929
BaseRepresentation
bin100110011100…
…0000110110001
31101220212101021
41030320012301
520124342003
61555535441
7333203245
oct114700661
941825337
1020152753
1110415075
1268ba581
134237b0a
142968425
151b812bd
hex13381b1

20152753 has 8 divisors (see below), whose sum is σ = 21039080. Its totient is φ = 19284480.

The previous prime is 20152747. The next prime is 20152789. The reversal of 20152753 is 35725102.

It can be written as a sum of positive squares in 4 ways, for example, as 10609 + 20142144 = 103^2 + 4488^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20152753 is a prime.

It is a super-2 number, since 2×201527532 = 812266906958018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20152703) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2208 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (2629885).

Almost surely, 220152753 is an apocalyptic number.

It is an amenable number.

20152753 is a deficient number, since it is larger than the sum of its proper divisors (886327).

20152753 is an equidigital number, since it uses as much as digits as its factorization.

20152753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 20152753 is about 4489.1817739985. The cubic root of 20152753 is about 272.1310687881.

Adding to 20152753 its reverse (35725102), we get a palindrome (55877855).

The spelling of 20152753 in words is "twenty million, one hundred fifty-two thousand, seven hundred fifty-three".

Divisors: 1 37 61 2257 8929 330373 544669 20152753