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13900672 = 27131829
BaseRepresentation
bin110101000001…
…101110000000
3222011020010201
4311001232000
512024310142
61213534544
7226103512
oct65015600
928136121
1013900672
117934865
1247a4454
132b59166
141bbbbb2
151348ab7
hexd41b80

13900672 has 32 divisors (see below), whose sum is σ = 27937800. Its totient is φ = 6888960.

The previous prime is 13900669. The next prime is 13900687. The reversal of 13900672 is 27600931.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13900672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16354 + ... + 17182.

Almost surely, 213900672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13900672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13968900).

13900672 is an abundant number, since it is smaller than the sum of its proper divisors (14037128).

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

13900672 is an equidigital number, since it uses as much as digits as its factorization.

13900672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13900672 is about 3728.3604975914. The cubic root of 13900672 is about 240.4428859179.

The spelling of 13900672 in words is "thirteen million, nine hundred thousand, six hundred seventy-two".

Divisors: 1 2 4 8 16 32 64 128 131 262 524 829 1048 1658 2096 3316 4192 6632 8384 13264 16768 26528 53056 106112 108599 217198 434396 868792 1737584 3475168 6950336 13900672