Search a number
-
+
128148612 = 22337349827
BaseRepresentation
bin1111010001101…
…10010010000100
322221010121211220
413220312102010
5230301223422
620414400340
73114150054
oct750662204
9287117756
10128148612
1166377a49
1236b000b0
132071aba7
141303b564
15b3b4e5c
hex7a36484

128148612 has 48 divisors (see below), whose sum is σ = 308347200. Its totient is φ = 41392512.

The previous prime is 128148607. The next prime is 128148613. The reversal of 128148612 is 216841821.

It is not an unprimeable number, because it can be changed into a prime (128148613) 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, 154543 + ... + 155369.

It is an arithmetic number, because the mean of its divisors is an integer number (6423900).

Almost surely, 2128148612 is an apocalyptic number.

128148612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128148612 is an abundant number, since it is smaller than the sum of its proper divisors (180198588).

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

128148612 is a wasteful number, since it uses less digits than its factorization.

128148612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1218 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 128148612 is about 11320.2743783002. The cubic root of 128148612 is about 504.1633855519.

The spelling of 128148612 in words is "one hundred twenty-eight million, one hundred forty-eight thousand, six hundred twelve".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 349 444 698 827 1047 1396 1654 2094 2481 3308 4188 4962 9924 12913 25826 30599 38739 51652 61198 77478 91797 122396 154956 183594 288623 367188 577246 865869 1154492 1731738 3463476 10679051 21358102 32037153 42716204 64074306 128148612