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8880139 = 23386093
BaseRepresentation
bin100001111000…
…000000001011
3121201011021001
4201320000023
54233131024
6514155431
7135323422
oct41700013
917634231
108880139
115015864
122b82b77
131abbc28
1412722b9
15ba6244
hex87800b

8880139 has 4 divisors (see below), whose sum is σ = 9266256. Its totient is φ = 8494024.

The previous prime is 8880107. The next prime is 8880143. The reversal of 8880139 is 9310888.

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 8880139 - 25 = 8880107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8880098 and 8880107.

It is not an unprimeable number, because it can be changed into a prime (8880439) 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, 193024 + ... + 193069.

It is an arithmetic number, because the mean of its divisors is an integer number (2316564).

Almost surely, 28880139 is an apocalyptic number.

8880139 is a deficient number, since it is larger than the sum of its proper divisors (386117).

8880139 is a wasteful number, since it uses less digits than its factorization.

8880139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386116.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 8880139 is about 2979.9562077319. The cubic root of 8880139 is about 207.0808415678.

The spelling of 8880139 in words is "eight million, eight hundred eighty thousand, one hundred thirty-nine".

Divisors: 1 23 386093 8880139