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202103444 = 22173292057
BaseRepresentation
bin11000000101111…
…01101010010100
3112002021220210202
430002331222110
5403214302234
632015440032
75002564604
oct1402755224
9462256722
10202103444
11a409a344
1257826018
1332b4284a
141cbacc04
1512b2277e
hexc0bda94

202103444 has 12 divisors (see below), whose sum is σ = 355726644. Its totient is φ = 100467264.

The previous prime is 202103441. The next prime is 202103449. The reversal of 202103444 is 444301202.

It can be written as a sum of positive squares in 2 ways, for example, as 186595600 + 15507844 = 13660^2 + 3938^2 .

It is a super-2 number, since 2×2021034442 = 81691604153322272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202103441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145337 + ... + 146720.

It is an arithmetic number, because the mean of its divisors is an integer number (29643887).

Almost surely, 2202103444 is an apocalyptic number.

It is an amenable number.

202103444 is a deficient number, since it is larger than the sum of its proper divisors (153623200).

202103444 is a wasteful number, since it uses less digits than its factorization.

202103444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292234 (or 292232 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202103444 is about 14216.3090849911. The cubic root of 202103444 is about 586.8465711744.

Adding to 202103444 its reverse (444301202), we get a palindrome (646404646).

The spelling of 202103444 in words is "two hundred two million, one hundred three thousand, four hundred forty-four".

Divisors: 1 2 4 173 346 692 292057 584114 1168228 50525861 101051722 202103444