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26690384 = 247238307
BaseRepresentation
bin110010111010…
…0001101010000
31212020000022202
41211310031100
523313043014
62352022332
7442602350
oct145641520
955200282
1026690384
111407a976
128b319a8
1356b6736
14378ab60
1525233de
hex1974350

26690384 has 20 divisors (see below), whose sum is σ = 59100384. Its totient is φ = 11438688.

The previous prime is 26690381. The next prime is 26690413. The reversal of 26690384 is 48309662.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26690381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119042 + ... + 119265.

Almost surely, 226690384 is an apocalyptic number.

It is an amenable number.

26690384 is an abundant number, since it is smaller than the sum of its proper divisors (32410000).

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

26690384 is a wasteful number, since it uses less digits than its factorization.

26690384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238322 (or 238316 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 26690384 is about 5166.2737054864. The cubic root of 26690384 is about 298.8488626665.

The spelling of 26690384 in words is "twenty-six million, six hundred ninety thousand, three hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 238307 476614 953228 1668149 1906456 3336298 3812912 6672596 13345192 26690384