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248820820 = 225471511753
BaseRepresentation
bin11101101010010…
…11010001010100
3122100012101222221
432311023101110
51002144231240
640405032124
76110641063
oct1665132124
9570171887
10248820820
111184a8846
126b3b5644
133c71ba71
14250901da
1516c9ea4a
hexed4b454

248820820 has 48 divisors (see below), whose sum is σ = 537481728. Its totient is φ = 96710400.

The previous prime is 248820791. The next prime is 248820821. The reversal of 248820820 is 28028842.

248820820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248820821) 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, 141064 + ... + 142816.

It is an arithmetic number, because the mean of its divisors is an integer number (11197536).

Almost surely, 2248820820 is an apocalyptic number.

248820820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248820820 is an abundant number, since it is smaller than the sum of its proper divisors (288660908).

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

248820820 is a wasteful number, since it uses less digits than its factorization.

248820820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1958 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 248820820 is about 15774.0552807450. The cubic root of 248820820 is about 628.9685144945.

The spelling of 248820820 in words is "two hundred forty-eight million, eight hundred twenty thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 47 94 151 188 235 302 470 604 755 940 1510 1753 3020 3506 7012 7097 8765 14194 17530 28388 35060 35485 70970 82391 141940 164782 264703 329564 411955 529406 823910 1058812 1323515 1647820 2647030 5294060 12441041 24882082 49764164 62205205 124410410 248820820