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3157484687 = 72239269617
BaseRepresentation
bin1011110000110011…
…0110010010001111
322011001100211201022
42330030312102033
522431304002222
61241151504355
7141150114500
oct27414662217
98131324638
103157484687
111380354a85
127415280bb
133b4204146
1421d4bcba7
15137301042
hexbc33648f

3157484687 has 12 divisors (see below), whose sum is σ = 3688374240. Its totient is φ = 2695081536.

The previous prime is 3157484683. The next prime is 3157484713. The reversal of 3157484687 is 7864847513.

It is a happy number.

It is not a de Polignac number, because 3157484687 - 22 = 3157484683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157484683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123098 + ... + 146519.

It is an arithmetic number, because the mean of its divisors is an integer number (307364520).

Almost surely, 23157484687 is an apocalyptic number.

3157484687 is a deficient number, since it is larger than the sum of its proper divisors (530889553).

3157484687 is a wasteful number, since it uses less digits than its factorization.

3157484687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269870 (or 269863 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 53.

The square root of 3157484687 is about 56191.5001312476. The cubic root of 3157484687 is about 1467.0573256244.

The spelling of 3157484687 in words is "three billion, one hundred fifty-seven million, four hundred eighty-four thousand, six hundred eighty-seven".

Divisors: 1 7 49 239 1673 11711 269617 1887319 13211233 64438463 451069241 3157484687