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2388139 = 1331087
BaseRepresentation
bin1001000111000010101011
311111022220121
421013002223
51102410024
6123104111
726204335
oct11070253
94438817
102388139
111391276
12972037
13658000
14462455
153228e4
hex2470ab

2388139 has 8 divisors (see below), whose sum is σ = 2589440. Its totient is φ = 2202408.

The previous prime is 2388103. The next prime is 2388157. The reversal of 2388139 is 9318832.

It is not a de Polignac number, because 2388139 - 221 = 290987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2388539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654 + ... + 2740.

It is an arithmetic number, because the mean of its divisors is an integer number (323680).

22388139 is an apocalyptic number.

2388139 is a deficient number, since it is larger than the sum of its proper divisors (201301).

2388139 is an equidigital number, since it uses as much as digits as its factorization.

2388139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1100 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 2388139 is about 1545.3604757467. The cubic root of 2388139 is about 133.6656661126.

The spelling of 2388139 in words is "two million, three hundred eighty-eight thousand, one hundred thirty-nine".

Divisors: 1 13 169 1087 2197 14131 183703 2388139