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131989098 = 2352142223
BaseRepresentation
bin1111101110111…
…11111001101010
3100012100202000010
413313133321222
5232242122343
621032552350
73161613603
oct767377152
9305322003
10131989098
11685603aa
12382526b6
1321463c77
141375adaa
15b8c2d33
hex7ddfe6a

131989098 has 16 divisors (see below), whose sum is σ = 264491136. Its totient is φ = 43910880.

The previous prime is 131989097. The next prime is 131989163. The reversal of 131989098 is 890989131.

It is a super-2 number, since 2×1319890982 = 34842243981707208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131989093) 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, 17986 + ... + 24237.

It is an arithmetic number, because the mean of its divisors is an integer number (16530696).

Almost surely, 2131989098 is an apocalyptic number.

131989098 is an abundant number, since it is smaller than the sum of its proper divisors (132502038).

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

131989098 is a wasteful number, since it uses less digits than its factorization.

131989098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42749.

The product of its (nonzero) digits is 139968, while the sum is 48.

The square root of 131989098 is about 11488.6508346281. The cubic root of 131989098 is about 509.1503191315.

The spelling of 131989098 in words is "one hundred thirty-one million, nine hundred eighty-nine thousand, ninety-eight".

Divisors: 1 2 3 6 521 1042 1563 3126 42223 84446 126669 253338 21998183 43996366 65994549 131989098