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128849050 = 25211234271
BaseRepresentation
bin1111010111000…
…01010010011010
322222110012200001
413223201102122
5230441132200
620441403214
73123125131
oct753412232
9288405601
10128849050
1166806220
123719950a
1320904955
1413180918
15b4a276a
hex7ae149a

128849050 has 24 divisors (see below), whose sum is σ = 261447552. Its totient is φ = 46854000.

The previous prime is 128849047. The next prime is 128849053. The reversal of 128849050 is 50948821.

It is an interprime number because it is at equal distance from previous prime (128849047) and next prime (128849053).

It is not an unprimeable number, because it can be changed into a prime (128849053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116586 + ... + 117685.

It is an arithmetic number, because the mean of its divisors is an integer number (10893648).

Almost surely, 2128849050 is an apocalyptic number.

128849050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128849050 is an abundant number, since it is smaller than the sum of its proper divisors (132598502).

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

128849050 is a wasteful number, since it uses less digits than its factorization.

128849050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234294 (or 234289 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 128849050 is about 11351.1695432673. The cubic root of 128849050 is about 505.0802734857.

The spelling of 128849050 in words is "one hundred twenty-eight million, eight hundred forty-nine thousand, fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 275 550 234271 468542 1171355 2342710 2576981 5153962 5856775 11713550 12884905 25769810 64424525 128849050