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13804025 = 522324007
BaseRepresentation
bin110100101010…
…000111111001
3221222022120012
4310222013321
512013212100
61211511305
7225221654
oct64520771
927868505
1013804025
117879194
124758535
132b24181
141b9489b
15132a135
hexd2a1f9

13804025 has 12 divisors (see below), whose sum is σ = 17861952. Its totient is φ = 10562640.

The previous prime is 13804019. The next prime is 13804027. The reversal of 13804025 is 52040831.

It is not a de Polignac number, because 13804025 - 26 = 13803961 is a prime.

It is a super-2 number, since 2×138040252 = 381102212401250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13804027) 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 11 ways as a sum of consecutive naturals, for example, 11429 + ... + 12578.

It is an arithmetic number, because the mean of its divisors is an integer number (1488496).

Almost surely, 213804025 is an apocalyptic number.

It is an amenable number.

13804025 is a deficient number, since it is larger than the sum of its proper divisors (4057927).

13804025 is a wasteful number, since it uses less digits than its factorization.

13804025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24040 (or 24035 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 13804025 is about 3715.3768314937. The cubic root of 13804025 is about 239.8843482136.

Adding to 13804025 its reverse (52040831), we get a palindrome (65844856).

The spelling of 13804025 in words is "thirteen million, eight hundred four thousand, twenty-five".

Divisors: 1 5 23 25 115 575 24007 120035 552161 600175 2760805 13804025