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2487109 = 4875107
BaseRepresentation
bin1001011111001101000101
311200100200011
421133031011
51114041414
6125150221
730066022
oct11371505
94610604
102487109
111449669
129bb371
13691081
1448a549
15341dc4
hex25f345

2487109 has 4 divisors (see below), whose sum is σ = 2492704. Its totient is φ = 2481516.

The previous prime is 2487097. The next prime is 2487113. The reversal of 2487109 is 9017842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2487109 - 211 = 2485061 is a prime.

It is a super-2 number, since 2×24871092 = 12371422355762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487139) 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, 2067 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (623176).

22487109 is an apocalyptic number.

It is an amenable number.

2487109 is a deficient number, since it is larger than the sum of its proper divisors (5595).

2487109 is an equidigital number, since it uses as much as digits as its factorization.

2487109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2487109 is about 1577.0570693542. The cubic root of 2487109 is about 135.4872016706.

The spelling of 2487109 in words is "two million, four hundred eighty-seven thousand, one hundred nine".

Divisors: 1 487 5107 2487109