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20941699 = 162112919
BaseRepresentation
bin100111111100…
…0101110000011
31110101221121111
41033320232003
520330113244
62024504151
7343000342
oct117705603
943357544
1020941699
1110903899
12701b057
134452c4c
142ad1b59
151c89e34
hex13f8b83

20941699 has 4 divisors (see below), whose sum is σ = 20956240. Its totient is φ = 20927160.

The previous prime is 20941673. The next prime is 20941703. The reversal of 20941699 is 99614902.

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 20941699 - 215 = 20908931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20941199) 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, 4839 + ... + 8080.

It is an arithmetic number, because the mean of its divisors is an integer number (5239060).

Almost surely, 220941699 is an apocalyptic number.

20941699 is a deficient number, since it is larger than the sum of its proper divisors (14541).

20941699 is a wasteful number, since it uses less digits than its factorization.

20941699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14540.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 20941699 is about 4576.2101131832. The cubic root of 20941699 is about 275.6368666552.

The spelling of 20941699 in words is "twenty million, nine hundred forty-one thousand, six hundred ninety-nine".

Divisors: 1 1621 12919 20941699