Search a number
-
+
215055230 = 25131654271
BaseRepresentation
bin11001101000101…
…11101101111110
3112222122221022112
430310113231332
5420023231410
633201214022
75220640115
oct1464275576
9488587275
10215055230
111004361a5
1260031312
1335728b20
14207c0c7c
1513d30105
hexcd17b7e

215055230 has 16 divisors (see below), whose sum is σ = 416876544. Its totient is φ = 79404960.

The previous prime is 215055223. The next prime is 215055251. The reversal of 215055230 is 32550512.

It is a junction number, because it is equal to n+sod(n) for n = 215055196 and 215055205.

It is a congruent number.

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, 827006 + ... + 827265.

It is an arithmetic number, because the mean of its divisors is an integer number (26054784).

Almost surely, 2215055230 is an apocalyptic number.

215055230 is a deficient number, since it is larger than the sum of its proper divisors (201821314).

215055230 is a wasteful number, since it uses less digits than its factorization.

215055230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654291.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 215055230 is about 14664.7615050501. The cubic root of 215055230 is about 599.1239344341.

The spelling of 215055230 in words is "two hundred fifteen million, fifty-five thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 1654271 3308542 8271355 16542710 21505523 43011046 107527615 215055230