Search a number
-
+
20746123 = 411074729
BaseRepresentation
bin100111100100…
…0111110001011
31110001000022221
41033020332023
520302333443
62020354511
7341224216
oct117107613
943030287
1020746123
111078a962
126b45a37
1343b4c18
142a8077d
151c4beed
hex13c8f8b

20746123 has 8 divisors (see below), whose sum is σ = 21455280. Its totient is φ = 20046720.

The previous prime is 20746109. The next prime is 20746127. The reversal of 20746123 is 32164702.

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

It is a cyclic number.

It is not a de Polignac number, because 20746123 - 25 = 20746091 is a prime.

It is a super-2 number, since 2×207461232 = 860803239062258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20746127) 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, 2023 + ... + 6751.

It is an arithmetic number, because the mean of its divisors is an integer number (2681910).

Almost surely, 220746123 is an apocalyptic number.

20746123 is a deficient number, since it is larger than the sum of its proper divisors (709157).

20746123 is a wasteful number, since it uses less digits than its factorization.

20746123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20746123 is about 4554.7912136562. The cubic root of 20746123 is about 274.7761175072.

The spelling of 20746123 in words is "twenty million, seven hundred forty-six thousand, one hundred twenty-three".

Divisors: 1 41 107 4387 4729 193889 506003 20746123