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20901266 = 210450633
BaseRepresentation
bin100111110111…
…0110110010010
31110022220010222
41033232312102
520322320031
62023553042
7342441431
oct117566622
943286128
1020901266
1110886481
126bbb782
13443a719
142ac1118
151c7ce7b
hex13eed92

20901266 has 4 divisors (see below), whose sum is σ = 31351902. Its totient is φ = 10450632.

The previous prime is 20901259. The next prime is 20901277. The reversal of 20901266 is 66210902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20894041 + 7225 = 4571^2 + 85^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5225315 + ... + 5225318.

Almost surely, 220901266 is an apocalyptic number.

20901266 is a deficient number, since it is larger than the sum of its proper divisors (10450636).

20901266 is a wasteful number, since it uses less digits than its factorization.

20901266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10450635.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20901266 is about 4571.7902401576. The cubic root of 20901266 is about 275.4593578847.

The spelling of 20901266 in words is "twenty million, nine hundred one thousand, two hundred sixty-six".

Divisors: 1 2 10450633 20901266