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26730385 = 5112272141
BaseRepresentation
bin110010111110…
…1111110010001
31212022001012021
41211331332101
523320333020
62352531441
7443130103
oct145757621
955261167
1026730385
11140a7a30
128b50b81
1356cb9c6
14379b573
1525301aa
hex197df91

26730385 has 16 divisors (see below), whose sum is σ = 35163072. Its totient is φ = 19345600.

The previous prime is 26730371. The next prime is 26730413. The reversal of 26730385 is 58303762.

It is not a de Polignac number, because 26730385 - 213 = 26722193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26730385.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11415 + ... + 13555.

It is an arithmetic number, because the mean of its divisors is an integer number (2197692).

Almost surely, 226730385 is an apocalyptic number.

It is an amenable number.

26730385 is a deficient number, since it is larger than the sum of its proper divisors (8432687).

26730385 is a wasteful number, since it uses less digits than its factorization.

26730385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 26730385 is about 5170.1436150266. The cubic root of 26730385 is about 298.9980835289.

The spelling of 26730385 in words is "twenty-six million, seven hundred thirty thousand, three hundred eighty-five".

Divisors: 1 5 11 55 227 1135 2141 2497 10705 12485 23551 117755 486007 2430035 5346077 26730385