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48320909 = 7213312447
BaseRepresentation
bin1011100001010…
…1000110001101
310100220221211022
42320111012031
544332232114
64443403525
71124502200
oct270250615
9110827738
1048320909
112530423a
12142235a5
13a01b070
1465bb937
15439748e
hex2e1518d

48320909 has 24 divisors (see below), whose sum is σ = 62512128. Its totient is φ = 36983520.

The previous prime is 48320893. The next prime is 48320929. The reversal of 48320909 is 90902384.

It is not a de Polignac number, because 48320909 - 24 = 48320893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48320929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18524 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (2604672).

Almost surely, 248320909 is an apocalyptic number.

48320909 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

48320909 is a deficient number, since it is larger than the sum of its proper divisors (14191219).

48320909 is a wasteful number, since it uses less digits than its factorization.

48320909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 48320909 is about 6951.3242623258. The cubic root of 48320909 is about 364.2322236101.

The spelling of 48320909 in words is "forty-eight million, three hundred twenty thousand, nine hundred nine".

Divisors: 1 7 13 31 49 91 217 403 637 1519 2447 2821 17129 19747 31811 75857 119903 222677 530999 986141 1558739 3716993 6902987 48320909