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13901888 = 2672111331
BaseRepresentation
bin110101000010…
…000001000000
3222011021210202
4311002001000
512024330023
61213544332
7226110200
oct65020100
928137722
1013901888
117935770
1247a50a8
132b59890
141bbc400
151349128
hexd42040

13901888 has 168 divisors, whose sum is σ = 38916864. Its totient is φ = 4838400.

The previous prime is 13901887. The next prime is 13901891. The reversal of 13901888 is 88810931.

It is not an unprimeable number, because it can be changed into a prime (13901887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448433 + ... + 448463.

It is an arithmetic number, because the mean of its divisors is an integer number (231648).

Almost surely, 213901888 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 13901888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19458432).

13901888 is an abundant number, since it is smaller than the sum of its proper divisors (25014976).

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

13901888 is a wasteful number, since it uses less digits than its factorization.

13901888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 13901888 is about 3728.5235683847. The cubic root of 13901888 is about 240.4498968505.

The spelling of 13901888 in words is "thirteen million, nine hundred one thousand, eight hundred eighty-eight".