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48578985 = 32571311863
BaseRepresentation
bin1011100101010…
…0000110101001
310101102001211200
42321110012221
544414011420
64453114413
71126625460
oct271240651
9111361750
1048578985
1125470124
1214328a09
13a0ab680
1466479d7
1543e8b90
hex2e541a9

48578985 has 48 divisors (see below), whose sum is σ = 103643904. Its totient is φ = 20497536.

The previous prime is 48578983. The next prime is 48579001. The reversal of 48578985 is 58987584.

48578985 is a `hidden beast` number, since 485 + 7 + 89 + 85 = 666.

It is not a de Polignac number, because 48578985 - 21 = 48578983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48578983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1837 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (2159248).

Almost surely, 248578985 is an apocalyptic number.

48578985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

48578985 is an abundant number, since it is smaller than the sum of its proper divisors (55064919).

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

48578985 is a wasteful number, since it uses less digits than its factorization.

48578985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11894 (or 11891 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The square root of 48578985 is about 6969.8626241842. The cubic root of 48578985 is about 364.8795123671.

The spelling of 48578985 in words is "forty-eight million, five hundred seventy-eight thousand, nine hundred eighty-five".

Divisors: 1 3 5 7 9 13 15 21 35 39 45 63 65 91 105 117 195 273 315 455 585 819 1365 4095 11863 35589 59315 83041 106767 154219 177945 249123 415205 462657 533835 747369 771095 1079533 1245615 1387971 2313285 3238599 3736845 5397665 6939855 9715797 16192995 48578985