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213470676 = 22321813
BaseRepresentation
bin11001011100101…
…00110111010100
3112212200102201100
430232110313110
5414122030201
633103230100
75201320326
oct1456246724
9485612640
10213470676
11aa553751
125b5a8330
13352c2813
14204cb616
1513b1a886
hexcb94dd4

213470676 has 36 divisors (see below), whose sum is σ = 542604244. Its totient is φ = 70763760.

The previous prime is 213470669. The next prime is 213470687. The reversal of 213470676 is 676074312.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

213470676 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 73616400 + 139854276 = 8580^2 + 11826^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 213470676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1179306 + ... + 1179486.

Almost surely, 2213470676 is an apocalyptic number.

It is an amenable number.

213470676 is an abundant number, since it is smaller than the sum of its proper divisors (329133568).

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

213470676 is an frugal number, since it uses more digits than its factorization.

213470676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 213470676 is about 14610.6357151220. The cubic root of 213470676 is about 597.6488320499.

213470676 divided by its sum of digits (36) gives a cube (5929741 = 1813).

The spelling of 213470676 in words is "two hundred thirteen million, four hundred seventy thousand, six hundred seventy-six".

Divisors: 1 2 3 4 6 9 12 18 36 181 362 543 724 1086 1629 2172 3258 6516 32761 65522 98283 131044 196566 294849 393132 589698 1179396 5929741 11859482 17789223 23718964 35578446 53367669 71156892 106735338 213470676