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2138468 = 22534617
BaseRepresentation
bin1000001010000101100100
311000122102112
420022011210
51021412333
6113500152
724114413
oct10120544
94018375
102138468
111230732
12871658
1359b487
143d947a
152c3948
hex20a164

2138468 has 6 divisors (see below), whose sum is σ = 3742326. Its totient is φ = 1069232.

The previous prime is 2138467. The next prime is 2138483. The reversal of 2138468 is 8648312.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 1024 = 1462^2 + 32^2 .

It is a d-powerful number, because it can be written as 211 + 1 + 313 + 8 + 49 + 67 + 8 .

It is not an unprimeable number, because it can be changed into a prime (2138467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267305 + ... + 267312.

It is an arithmetic number, because the mean of its divisors is an integer number (623721).

22138468 is an apocalyptic number.

It is an amenable number.

2138468 is a deficient number, since it is larger than the sum of its proper divisors (1603858).

2138468 is a wasteful number, since it uses less digits than its factorization.

2138468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534621 (or 534619 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 2138468 is about 1462.3501632646. The cubic root of 2138468 is about 128.8351157419.

The spelling of 2138468 in words is "two million, one hundred thirty-eight thousand, four hundred sixty-eight".

Divisors: 1 2 4 534617 1069234 2138468