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128202914 = 2721308193
BaseRepresentation
bin1111010010000…
…11100010100010
322221020101100002
413221003202202
5230304443124
620415500002
73114464300
oct751034242
9287211302
10128202914
1166404824
1236b27602
1320739818
1413053270
15b3c60ae
hex7a438a2

128202914 has 12 divisors (see below), whose sum is σ = 223701174. Its totient is φ = 54944064.

The previous prime is 128202911. The next prime is 128202931. The reversal of 128202914 is 419202821.

It can be written as a sum of positive squares in only one way, i.e., 124657225 + 3545689 = 11165^2 + 1883^2 .

It is not an unprimeable number, because it can be changed into a prime (128202911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653999 + ... + 654194.

Almost surely, 2128202914 is an apocalyptic number.

128202914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128202914 is a deficient number, since it is larger than the sum of its proper divisors (95498260).

128202914 is a wasteful number, since it uses less digits than its factorization.

128202914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308209 (or 1308202 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 128202914 is about 11322.6725643728. The cubic root of 128202914 is about 504.2345872962.

The spelling of 128202914 in words is "one hundred twenty-eight million, two hundred two thousand, nine hundred fourteen".