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135077980 = 22521132009
BaseRepresentation
bin10000000110100…
…10000001011100
3100102011200011011
420003102001130
5234034443410
621223105004
73230100232
oct1003220134
9312150134
10135077980
116a2800a4
12392a2164
1321ca5bcb
1413d22952
15bcd318a
hex80d205c

135077980 has 24 divisors (see below), whose sum is σ = 285017040. Its totient is φ = 53773440.

The previous prime is 135077927. The next prime is 135077983. The reversal of 135077980 is 89770531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135077983) 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, 11785 + ... + 20224.

It is an arithmetic number, because the mean of its divisors is an integer number (11875710).

Almost surely, 2135077980 is an apocalyptic number.

135077980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135077980 is an abundant number, since it is smaller than the sum of its proper divisors (149939060).

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

135077980 is a wasteful number, since it uses less digits than its factorization.

135077980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32229 (or 32227 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 135077980 is about 11622.3052790744. The cubic root of 135077980 is about 513.0915382683.

The spelling of 135077980 in words is "one hundred thirty-five million, seventy-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 211 422 844 1055 2110 4220 32009 64018 128036 160045 320090 640180 6753899 13507798 27015596 33769495 67538990 135077980