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13902804 = 22321722717
BaseRepresentation
bin110101000010…
…001111010100
3222011100001200
4311002033110
512024342204
61213552500
7226112646
oct65021724
928140050
1013902804
117936423
1247a5730
132b5a116
141bbc896
151349539
hexd423d4

13902804 has 36 divisors (see below), whose sum is σ = 37212084. Its totient is φ = 4361472.

The previous prime is 13902797. The next prime is 13902809. The reversal of 13902804 is 40820931.

It can be written as a sum of positive squares in 2 ways, for example, as 7851204 + 6051600 = 2802^2 + 2460^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902809) 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 11 ways as a sum of consecutive naturals, for example, 10747 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (1033669).

Almost surely, 213902804 is an apocalyptic number.

It is an amenable number.

13902804 is an abundant number, since it is smaller than the sum of its proper divisors (23309280).

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

13902804 is a wasteful number, since it uses less digits than its factorization.

13902804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22744 (or 22739 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13902804 is about 3728.6464031871. The cubic root of 13902804 is about 240.4551778423.

It can be divided in two parts, 13902 and 804, that added together give a triangular number (14706 = T171).

The spelling of 13902804 in words is "thirteen million, nine hundred two thousand, eight hundred four".

Divisors: 1 2 3 4 6 9 12 17 18 34 36 51 68 102 153 204 306 612 22717 45434 68151 90868 136302 204453 272604 386189 408906 772378 817812 1158567 1544756 2317134 3475701 4634268 6951402 13902804