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248490131 = 7183149283
BaseRepresentation
bin11101100111110…
…10100010010011
3122022120121101012
432303322202103
51002103141011
640354001135
76105063011
oct1663724223
9568517335
10248490131
111182a234a
126b2761ab
133c6343a6
14250058b1
1516c36a8b
hexecfa893

248490131 has 16 divisors (see below), whose sum is σ = 257644800. Its totient is φ = 239564640.

The previous prime is 248490097. The next prime is 248490133. The reversal of 248490131 is 131094842.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 248490131 - 214 = 248473747 is a prime.

It is a super-2 number, since 2×2484901312 = 123494690408794322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248490133) 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, 877916 + ... + 878198.

It is an arithmetic number, because the mean of its divisors is an integer number (16102800).

Almost surely, 2248490131 is an apocalyptic number.

248490131 is a deficient number, since it is larger than the sum of its proper divisors (9154669).

248490131 is a wasteful number, since it uses less digits than its factorization.

248490131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 248490131 is about 15763.5697416543. The cubic root of 248490131 is about 628.6897527470.

The spelling of 248490131 in words is "two hundred forty-eight million, four hundred ninety thousand, one hundred thirty-one".

Divisors: 1 71 83 149 283 5893 10579 12367 20093 23489 42167 878057 1667719 2993857 3499861 248490131