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20758053 = 324128711
BaseRepresentation
bin100111100101…
…1111000100101
31110001121200210
41033023320211
520303224203
62020530033
7341304051
oct117137045
943047623
1020758053
1110798918
126b50919
1343ba494
142a84c61
151c50803
hex13cbe25

20758053 has 8 divisors (see below), whose sum is σ = 27793216. Its totient is φ = 13780800.

The previous prime is 20758043. The next prime is 20758063. The reversal of 20758053 is 35085702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20758043) and next prime (20758063).

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

It is not a de Polignac number, because 20758053 - 216 = 20692517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20758053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20758043) 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, 13633 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (3474152).

Almost surely, 220758053 is an apocalyptic number.

It is an amenable number.

20758053 is a deficient number, since it is larger than the sum of its proper divisors (7035163).

20758053 is a wasteful number, since it uses less digits than its factorization.

20758053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28955.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 20758053 is about 4556.1006354118. The cubic root of 20758053 is about 274.8287771605.

The spelling of 20758053 in words is "twenty million, seven hundred fifty-eight thousand, fifty-three".

Divisors: 1 3 241 723 28711 86133 6919351 20758053