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20874763 = 713229393
BaseRepresentation
bin100111110100…
…0011000001011
31110021112210101
41033220120023
520320443023
62023230231
7342301240
oct117503013
943245711
1020874763
1110868578
126ba8377
13442b640
142ab55c7
151c751ad
hex13e860b

20874763 has 8 divisors (see below), whose sum is σ = 25692128. Its totient is φ = 16516224.

The previous prime is 20874761. The next prime is 20874779. The reversal of 20874763 is 36747802.

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 20874763 - 21 = 20874761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20874761) 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, 114606 + ... + 114787.

It is an arithmetic number, because the mean of its divisors is an integer number (3211516).

Almost surely, 220874763 is an apocalyptic number.

20874763 is a deficient number, since it is larger than the sum of its proper divisors (4817365).

20874763 is a wasteful number, since it uses less digits than its factorization.

20874763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229413.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 20874763 is about 4568.8907844246. The cubic root of 20874763 is about 275.3428802953.

The spelling of 20874763 in words is "twenty million, eight hundred seventy-four thousand, seven hundred sixty-three".

Divisors: 1 7 13 91 229393 1605751 2982109 20874763