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13752037 = 13281373
BaseRepresentation
bin110100011101…
…011011100101
3221212200020201
4310131123211
512010031122
61210430501
7224614255
oct64353345
927780221
1013752037
117843122
124732431
132b06600
141b7d965
151319a27
hexd1d6e5

13752037 has 6 divisors (see below), whose sum is σ = 14891442. Its totient is φ = 12694032.

The previous prime is 13752019. The next prime is 13752041. The reversal of 13752037 is 73025731.

It can be written as a sum of positive squares in 3 ways, for example, as 799236 + 12952801 = 894^2 + 3599^2 .

It is not a de Polignac number, because 13752037 - 27 = 13751909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13751996 and 13752014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13752017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40518 + ... + 40855.

It is an arithmetic number, because the mean of its divisors is an integer number (2481907).

Almost surely, 213752037 is an apocalyptic number.

It is an amenable number.

13752037 is a deficient number, since it is larger than the sum of its proper divisors (1139405).

13752037 is an equidigital number, since it uses as much as digits as its factorization.

13752037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81399 (or 81386 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 13752037 is about 3708.3739023998. The cubic root of 13752037 is about 239.5828227202.

Adding to 13752037 its reverse (73025731), we get a palindrome (86777768).

The spelling of 13752037 in words is "thirteen million, seven hundred fifty-two thousand, thirty-seven".

Divisors: 1 13 169 81373 1057849 13752037