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26706980 = 2251335349
BaseRepresentation
bin110010111100…
…0010000100100
31212020212002102
41211320100210
523314110410
62352231232
7443001626
oct145702044
955225072
1026706980
1114091393
128b3b518
1356c1161
143792c16
1525282a5
hex1978424

26706980 has 12 divisors (see below), whose sum is σ = 56084700. Its totient is φ = 10682784.

The previous prime is 26706947. The next prime is 26706991. The reversal of 26706980 is 8960762.

It can be written as a sum of positive squares in 2 ways, for example, as 17909824 + 8797156 = 4232^2 + 2966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667655 + ... + 667694.

It is an arithmetic number, because the mean of its divisors is an integer number (4673725).

Almost surely, 226706980 is an apocalyptic number.

26706980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26706980 is an abundant number, since it is smaller than the sum of its proper divisors (29377720).

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

26706980 is a wasteful number, since it uses less digits than its factorization.

26706980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335358 (or 1335356 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 26706980 is about 5167.8796425613. The cubic root of 26706980 is about 298.9107909388.

The spelling of 26706980 in words is "twenty-six million, seven hundred six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1335349 2670698 5341396 6676745 13353490 26706980