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128848932 = 223210135437
BaseRepresentation
bin1111010111000…
…01010000100100
322222110012111200
413223201100210
5230441131212
620441402500
73123124602
oct753412044
9288405450
10128848932
1166806123
1237199430
1320904894
1413180872
15b4a26dc
hex7ae1424

128848932 has 36 divisors (see below), whose sum is σ = 328935516. Its totient is φ = 42523200.

The previous prime is 128848931. The next prime is 128848961. The reversal of 128848932 is 239848821.

It can be written as a sum of positive squares in 2 ways, for example, as 120692196 + 8156736 = 10986^2 + 2856^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (128848931) 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, 14083 + ... + 21354.

Almost surely, 2128848932 is an apocalyptic number.

128848932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128848932 is an abundant number, since it is smaller than the sum of its proper divisors (200086584).

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

128848932 is a wasteful number, since it uses less digits than its factorization.

128848932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35548 (or 35543 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 128848932 is about 11351.1643455639. The cubic root of 128848932 is about 505.0801193014.

The spelling of 128848932 in words is "one hundred twenty-eight million, eight hundred forty-eight thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 9 12 18 36 101 202 303 404 606 909 1212 1818 3636 35437 70874 106311 141748 212622 318933 425244 637866 1275732 3579137 7158274 10737411 14316548 21474822 32212233 42949644 64424466 128848932