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11427871 = 713314051
BaseRepresentation
bin101011100110…
…000000011111
3210111121002111
4223212000133
510411142441
61044534451
7166064260
oct53460037
923447074
1011427871
1164a5a24
1239b1427
1324a1770
141736967
15100b081
hexae601f

11427871 has 16 divisors (see below), whose sum is σ = 14522368. Its totient is φ = 8748000.

The previous prime is 11427863. The next prime is 11427877. The reversal of 11427871 is 17872411.

11427871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 7-Lehmer number, since φ(11427871) divides (11427871-1)7.

It is a cyclic number.

It is not a de Polignac number, because 11427871 - 23 = 11427863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11427877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796 + ... + 4846.

It is an arithmetic number, because the mean of its divisors is an integer number (907648).

Almost surely, 211427871 is an apocalyptic number.

11427871 is a deficient number, since it is larger than the sum of its proper divisors (3094497).

11427871 is a wasteful number, since it uses less digits than its factorization.

11427871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102.

The product of its digits is 3136, while the sum is 31.

The square root of 11427871 is about 3380.5134225440. The cubic root of 11427871 is about 225.2449743336.

The spelling of 11427871 in words is "eleven million, four hundred twenty-seven thousand, eight hundred seventy-one".

Divisors: 1 7 13 31 91 217 403 2821 4051 28357 52663 125581 368641 879067 1632553 11427871