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130908642 = 2341335279
BaseRepresentation
bin1111100110110…
…00000111100010
3100010022211220020
413303120013202
5232003034032
620553454310
73146463564
oct763300742
9303284806
10130908642
1167992667
1237a11396
1321176247
1413559334
15b75cb2c
hex7cd81e2

130908642 has 16 divisors (see below), whose sum is σ = 261930240. Its totient is φ = 43617392.

The previous prime is 130908611. The next prime is 130908647. The reversal of 130908642 is 246809031.

It is not an unprimeable number, because it can be changed into a prime (130908647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22159 + ... + 27437.

It is an arithmetic number, because the mean of its divisors is an integer number (16370640).

Almost surely, 2130908642 is an apocalyptic number.

130908642 is an abundant number, since it is smaller than the sum of its proper divisors (131021598).

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

130908642 is a wasteful number, since it uses less digits than its factorization.

130908642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9417.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 130908642 is about 11441.5314534375. The cubic root of 130908642 is about 507.7572180868.

The spelling of 130908642 in words is "one hundred thirty million, nine hundred eight thousand, six hundred forty-two".

Divisors: 1 2 3 6 4133 5279 8266 10558 12399 15837 24798 31674 21818107 43636214 65454321 130908642