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248953540 = 225117611487
BaseRepresentation
bin11101101011010…
…11101011000100
3122100110011001111
432311223223010
51002213003130
640411534404
76112033033
oct1665535304
9570404044
10248953540
11118589530
126b45a404
133c7672b4
14250c671a
1516cc902a
hexed6bac4

248953540 has 48 divisors (see below), whose sum is σ = 571463424. Its totient is φ = 90348800.

The previous prime is 248953519. The next prime is 248953553. The reversal of 248953540 is 45359842.

It is a junction number, because it is equal to n+sod(n) for n = 248953493 and 248953502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166677 + ... + 168163.

It is an arithmetic number, because the mean of its divisors is an integer number (11905488).

Almost surely, 2248953540 is an apocalyptic number.

248953540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248953540 is an abundant number, since it is smaller than the sum of its proper divisors (322509884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

248953540 is a wasteful number, since it uses less digits than its factorization.

248953540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 248953540 is about 15778.2616279488. The cubic root of 248953540 is about 629.0803243551.

The spelling of 248953540 in words is "two hundred forty-eight million, nine hundred fifty-three thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 761 1487 1522 2974 3044 3805 5948 7435 7610 8371 14870 15220 16357 16742 29740 32714 33484 41855 65428 81785 83710 163570 167420 327140 1131607 2263214 4526428 5658035 11316070 12447677 22632140 24895354 49790708 62238385 124476770 248953540