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248152989 = 3731737277
BaseRepresentation
bin11101100101010…
…00001110011101
3122021221110220110
432302220032131
51002011343424
640342440233
76102160050
oct1662501635
9567843813
10248152989
11118092017
126b133079
133c546ab6
1424d58a97
1516bbbc29
hexeca839d

248152989 has 16 divisors (see below), whose sum is σ = 379340928. Its totient is φ = 141350592.

The previous prime is 248152987. The next prime is 248153011. The reversal of 248152989 is 989251842.

It is not a de Polignac number, because 248152989 - 21 = 248152987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248152987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11982 + ... + 25295.

It is an arithmetic number, because the mean of its divisors is an integer number (23708808).

Almost surely, 2248152989 is an apocalyptic number.

It is an amenable number.

248152989 is a deficient number, since it is larger than the sum of its proper divisors (131187939).

248152989 is a wasteful number, since it uses less digits than its factorization.

248152989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37604.

The product of its digits is 414720, while the sum is 48.

The square root of 248152989 is about 15752.8724047394. The cubic root of 248152989 is about 628.4052965786.

The spelling of 248152989 in words is "two hundred forty-eight million, one hundred fifty-two thousand, nine hundred eighty-nine".

Divisors: 1 3 7 21 317 951 2219 6657 37277 111831 260939 782817 11816809 35450427 82717663 248152989