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248489420 = 22512424471
BaseRepresentation
bin11101100111110…
…10010111001100
3122022120120101212
432303322113030
51002103130140
640353553552
76105060644
oct1663722714
9568516355
10248489420
111182a1863
126b2758b8
133c633c7a
1425005524
1516c36765
hexecfa5cc

248489420 has 12 divisors (see below), whose sum is σ = 521827824. Its totient is φ = 99395760.

The previous prime is 248489363. The next prime is 248489441. The reversal of 248489420 is 24984842.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6212216 + ... + 6212255.

It is an arithmetic number, because the mean of its divisors is an integer number (43485652).

Almost surely, 2248489420 is an apocalyptic number.

248489420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248489420 is an abundant number, since it is smaller than the sum of its proper divisors (273338404).

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

248489420 is a wasteful number, since it uses less digits than its factorization.

248489420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12424480 (or 12424478 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 248489420 is about 15763.5471896398. The cubic root of 248489420 is about 628.6891531272.

The spelling of 248489420 in words is "two hundred forty-eight million, four hundred eighty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 12424471 24848942 49697884 62122355 124244710 248489420