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215153060 = 22510757653
BaseRepresentation
bin11001101001011…
…11100110100100
3112222211220111212
430310233212210
5420034344220
633203250552
75221525253
oct1464574644
9488756455
10215153060
111004a2751
1260079a58
1335761505
142080879a
1513d4e0c5
hexcd2f9a4

215153060 has 12 divisors (see below), whose sum is σ = 451821468. Its totient is φ = 86061216.

The previous prime is 215153053. The next prime is 215153069. The reversal of 215153060 is 60351512.

It can be written as a sum of positive squares in 2 ways, for example, as 80964004 + 134189056 = 8998^2 + 11584^2 .

It is not an unprimeable number, because it can be changed into a prime (215153069) 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, 5378807 + ... + 5378846.

It is an arithmetic number, because the mean of its divisors is an integer number (37651789).

Almost surely, 2215153060 is an apocalyptic number.

215153060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215153060 is an abundant number, since it is smaller than the sum of its proper divisors (236668408).

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

215153060 is a wasteful number, since it uses less digits than its factorization.

215153060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10757662 (or 10757660 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 215153060 is about 14668.0966727112. The cubic root of 215153060 is about 599.2147690986.

The spelling of 215153060 in words is "two hundred fifteen million, one hundred fifty-three thousand, sixty".

Divisors: 1 2 4 5 10 20 10757653 21515306 43030612 53788265 107576530 215153060