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220590920 = 23511501343
BaseRepresentation
bin11010010010111…
…11001101001000
3120101002011212002
431021133031020
5422432402140
633520010132
75315664134
oct1511371510
9511064762
10220590920
11103577250
1261a60948
1336916694
14214223c4
1514575415
hexd25f348

220590920 has 32 divisors (see below), whose sum is σ = 541451520. Its totient is φ = 80214720.

The previous prime is 220590919. The next prime is 220590941. The reversal of 220590920 is 29095022.

220590920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250232 + ... + 251111.

It is an arithmetic number, because the mean of its divisors is an integer number (16920360).

Almost surely, 2220590920 is an apocalyptic number.

220590920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220590920 is an abundant number, since it is smaller than the sum of its proper divisors (320860600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220590920 is a wasteful number, since it uses less digits than its factorization.

220590920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501365 (or 501361 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 220590920 is about 14852.3035250428. The cubic root of 220590920 is about 604.2210862647.

The spelling of 220590920 in words is "two hundred twenty million, five hundred ninety thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 501343 1002686 2005372 2506715 4010744 5013430 5514773 10026860 11029546 20053720 22059092 27573865 44118184 55147730 110295460 220590920