Search a number
-
+
20929461 = 373313011
BaseRepresentation
bin100111111010…
…1101110110101
31110101022211020
41033311232311
520324220321
62024331353
7342616560
oct117655665
943338736
1020929461
11108a5683
127013b59
13444a4c7
142acb4d7
151c864c6
hex13f5bb5

20929461 has 16 divisors (see below), whose sum is σ = 31999488. Its totient is φ = 11919600.

The previous prime is 20929459. The next prime is 20929463. The reversal of 20929461 is 16492902.

It is an interprime number because it is at equal distance from previous prime (20929459) and next prime (20929463).

It is not a de Polignac number, because 20929461 - 21 = 20929459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20929463) 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 15 ways as a sum of consecutive naturals, for example, 5446 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (1999968).

Almost surely, 220929461 is an apocalyptic number.

20929461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20929461 is a deficient number, since it is larger than the sum of its proper divisors (11070027).

20929461 is a wasteful number, since it uses less digits than its factorization.

20929461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20929461 is about 4574.8727851165. The cubic root of 20929461 is about 275.5831635741.

The spelling of 20929461 in words is "twenty million, nine hundred twenty-nine thousand, four hundred sixty-one".

Divisors: 1 3 7 21 331 993 2317 3011 6951 9033 21077 63231 996641 2989923 6976487 20929461