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128470941 = 3961107
BaseRepresentation
bin1111010100001…
…00111110011101
322221202000000000
413222010332131
5230342032231
620425324513
73116661564
oct752047635
9287660000
10128470941
1166578135
1237036739
1320801811
14130c2bdb
15b42a6e6
hex7a84f9d

128470941 has 40 divisors (see below), whose sum is σ = 197692704. Its totient is φ = 83455920.

The previous prime is 128470933. The next prime is 128470949. The reversal of 128470941 is 149074821.

It is an interprime number because it is at equal distance from previous prime (128470933) and next prime (128470949).

It is not a de Polignac number, because 128470941 - 23 = 128470933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128470896 and 128470905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128470949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1200610 + ... + 1200716.

Almost surely, 2128470941 is an apocalyptic number.

It is an amenable number.

128470941 is a deficient number, since it is larger than the sum of its proper divisors (69221763).

128470941 is an frugal number, since it uses more digits than its factorization.

128470941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128470941 is about 11334.5022387399. The cubic root of 128470941 is about 504.5857348278.

The spelling of 128470941 in words is "one hundred twenty-eight million, four hundred seventy thousand, nine hundred forty-one".

Divisors: 1 3 9 27 61 81 107 183 243 321 549 729 963 1647 2187 2889 4941 6527 6561 8667 14823 19581 19683 26001 44469 58743 78003 133407 176229 234009 400221 528687 702027 1200663 1586061 2106081 4758183 14274549 42823647 128470941