Search a number
-
+
2120469 = 31354371
BaseRepresentation
bin1000000101101100010101
310222201201220
420011230111
51020323334
6113240553
724011061
oct10055425
93881656
102120469
11121915a
12863159
13593220
143d2aa1
152bd449
hex205b15

2120469 has 8 divisors (see below), whose sum is σ = 3044832. Its totient is φ = 1304880.

The previous prime is 2120453. The next prime is 2120473. The reversal of 2120469 is 9640212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120469 - 24 = 2120453 is a prime.

It is a super-2 number, since 2×21204692 = 8992777559922, which contains 22 as substring.

2120469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27147 + ... + 27224.

It is an arithmetic number, because the mean of its divisors is an integer number (380604).

22120469 is an apocalyptic number.

It is an amenable number.

2120469 is a deficient number, since it is larger than the sum of its proper divisors (924363).

2120469 is a wasteful number, since it uses less digits than its factorization.

2120469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54387.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2120469 is about 1456.1830242109. The cubic root of 2120469 is about 128.4726382213.

The spelling of 2120469 in words is "two million, one hundred twenty thousand, four hundred sixty-nine".

Divisors: 1 3 13 39 54371 163113 706823 2120469