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20488007 = 291315393
BaseRepresentation
bin100111000100…
…1111101000111
31102112220021002
41032021331013
520221104012
62011043515
7336100541
oct116117507
942486232
1020488007
1110623a41
126a4059b
1343245a7
142a14691
151bea7c2
hex1389f47

20488007 has 8 divisors (see below), whose sum is σ = 21360240. Its totient is φ = 19626880.

The previous prime is 20488003. The next prime is 20488033. The reversal of 20488007 is 70088402.

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 20488007 - 22 = 20488003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488001) 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, 1103 + ... + 6495.

It is an arithmetic number, because the mean of its divisors is an integer number (2670030).

Almost surely, 220488007 is an apocalyptic number.

20488007 is a deficient number, since it is larger than the sum of its proper divisors (872233).

20488007 is a wasteful number, since it uses less digits than its factorization.

20488007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20488007 is about 4526.3679700175. The cubic root of 20488007 is about 273.6318024929.

The spelling of 20488007 in words is "twenty million, four hundred eighty-eight thousand, seven".

Divisors: 1 29 131 3799 5393 156397 706483 20488007