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8901381 = 39113257
BaseRepresentation
bin100001111101…
…001100000101
3121202020101210
4201331030011
54234321011
6514442033
7135442356
oct41751405
917666353
108901381
11502a815
122b93319
131ac87b8
141279d2d
15bac6a6
hex87d305

8901381 has 8 divisors (see below), whose sum is σ = 11885184. Its totient is φ = 5925920.

The previous prime is 8901337. The next prime is 8901383. The reversal of 8901381 is 1831098.

8901381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8901381 - 29 = 8900869 is a prime.

It is a super-2 number, since 2×89013812 = 158469167414322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8901383) 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 7 ways as a sum of consecutive naturals, for example, 1105 + ... + 4361.

It is an arithmetic number, because the mean of its divisors is an integer number (1485648).

Almost surely, 28901381 is an apocalyptic number.

It is an amenable number.

8901381 is a deficient number, since it is larger than the sum of its proper divisors (2983803).

8901381 is a wasteful number, since it uses less digits than its factorization.

8901381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 8901381 is about 2983.5182251831. The cubic root of 8901381 is about 207.2458280413.

The spelling of 8901381 in words is "eight million, nine hundred one thousand, three hundred eighty-one".

Divisors: 1 3 911 2733 3257 9771 2967127 8901381