Search a number
-
+
26931037 = 721928927
BaseRepresentation
bin110011010111…
…0111101011101
31212200020102211
41212232331131
523343243122
62401120421
7444624100
oct146567535
955606384
1026931037
1114224761
129029111
13576c133
143810737
15256e877
hex19aef5d

26931037 has 12 divisors (see below), whose sum is σ = 32977920. Its totient is φ = 21868056.

The previous prime is 26931019. The next prime is 26931067. The reversal of 26931037 is 73013962.

It is not a de Polignac number, because 26931037 - 211 = 26928989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26931007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13533 + ... + 15394.

It is an arithmetic number, because the mean of its divisors is an integer number (2748160).

Almost surely, 226931037 is an apocalyptic number.

It is an amenable number.

26931037 is a deficient number, since it is larger than the sum of its proper divisors (6046883).

26931037 is a wasteful number, since it uses less digits than its factorization.

26931037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28960 (or 28953 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 26931037 is about 5189.5122121448. The cubic root of 26931037 is about 299.7443637103.

Adding to 26931037 its reverse (73013962), we get a palindrome (99944999).

The spelling of 26931037 in words is "twenty-six million, nine hundred thirty-one thousand, thirty-seven".

Divisors: 1 7 19 49 133 931 28927 202489 549613 1417423 3847291 26931037