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20208703 = 103196201
BaseRepresentation
bin100110100010…
…1110000111111
31102000201010111
41031011300333
520133134303
62001050451
7333525334
oct115056077
942021114
1020208703
1110453109
126926a27
134257418
14298098b
151b92b6d
hex1345c3f

20208703 has 4 divisors (see below), whose sum is σ = 20405008. Its totient is φ = 20012400.

The previous prime is 20208701. The next prime is 20208707. The reversal of 20208703 is 30780202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20208703 - 21 = 20208701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20208701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97998 + ... + 98203.

It is an arithmetic number, because the mean of its divisors is an integer number (5101252).

Almost surely, 220208703 is an apocalyptic number.

20208703 is a deficient number, since it is larger than the sum of its proper divisors (196305).

20208703 is a wasteful number, since it uses less digits than its factorization.

20208703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196304.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20208703 is about 4495.4091026290. The cubic root of 20208703 is about 272.3826748526.

Adding to 20208703 its reverse (30780202), we get a palindrome (50988905).

The spelling of 20208703 in words is "twenty million, two hundred eight thousand, seven hundred three".

Divisors: 1 103 196201 20208703