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10912139 = 71558877
BaseRepresentation
bin101001101000…
…000110001011
3202112101122022
4221220012023
510243142024
61025515055
7161515550
oct51500613
922471568
1010912139
1161834a7
1237a2a8b
132350ab4
141640a27
15e5835e
hexa6818b

10912139 has 4 divisors (see below), whose sum is σ = 12471024. Its totient is φ = 9353256.

The previous prime is 10912063. The next prime is 10912159. The reversal of 10912139 is 93121901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10912139 - 212 = 10908043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10912159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779432 + ... + 779445.

It is an arithmetic number, because the mean of its divisors is an integer number (3117756).

Almost surely, 210912139 is an apocalyptic number.

10912139 is a deficient number, since it is larger than the sum of its proper divisors (1558885).

10912139 is an equidigital number, since it uses as much as digits as its factorization.

10912139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558884.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 10912139 is about 3303.3526908279. The cubic root of 10912139 is about 221.8043009289.

The spelling of 10912139 in words is "ten million, nine hundred twelve thousand, one hundred thirty-nine".

Divisors: 1 7 1558877 10912139