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26420655 = 351978941
BaseRepresentation
bin110010011001…
…0010110101111
31211201022022210
41210302112233
523230430110
62342141503
7440400102
oct144622657
954638283
1026420655
1113a06258
128a21893
135620a31
14371a739
1524bd520
hex19325af

26420655 has 16 divisors (see below), whose sum is σ = 42492384. Its totient is φ = 14017920.

The previous prime is 26420651. The next prime is 26420657. The reversal of 26420655 is 55602462.

It is not a de Polignac number, because 26420655 - 22 = 26420651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26420651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516 + ... + 7425.

It is an arithmetic number, because the mean of its divisors is an integer number (2655774).

Almost surely, 226420655 is an apocalyptic number.

26420655 is a deficient number, since it is larger than the sum of its proper divisors (16071729).

26420655 is a wasteful number, since it uses less digits than its factorization.

26420655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 26420655 is about 5140.1026254346. The cubic root of 26420655 is about 297.8387450917.

The spelling of 26420655 in words is "twenty-six million, four hundred twenty thousand, six hundred fifty-five".

Divisors: 1 3 5 15 197 591 985 2955 8941 26823 44705 134115 1761377 5284131 8806885 26420655