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20883379 = 1123197419
BaseRepresentation
bin100111110101…
…0011110110011
31110021222121111
41033222132303
520321232004
62023334151
7342335326
oct117523663
943258544
1020883379
1110873aa0
126bb1357
13443253a
142ab87bd
151c77a04
hex13ea7b3

20883379 has 16 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 18024160.

The previous prime is 20883377. The next prime is 20883383. The reversal of 20883379 is 97338802.

It is a happy number.

It is not a de Polignac number, because 20883379 - 21 = 20883377 is a prime.

It is a super-2 number, since 2×208833792 = 872231036915282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20883371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49632 + ... + 50050.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 220883379 is an apocalyptic number.

20883379 is a deficient number, since it is larger than the sum of its proper divisors (3066701).

20883379 is a wasteful number, since it uses less digits than its factorization.

20883379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20883379 is about 4569.8335855915. The cubic root of 20883379 is about 275.3807574189.

The spelling of 20883379 in words is "twenty million, eight hundred eighty-three thousand, three hundred seventy-nine".

Divisors: 1 11 23 197 253 419 2167 4531 4609 9637 49841 82543 106007 907973 1898489 20883379