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BaseRepresentation
bin10111111111100…
…10011000101100
3112000201121200010
423333302120230
5403011131303
631545533220
74662526263
oct1377623054
9460647603
10201270828
11a3680830
12574a4210
1332910885
141ca335da
1512a0ac03
hexbff262c

201270828 has 48 divisors (see below), whose sum is σ = 518837760. Its totient is φ = 60216000.

The previous prime is 201270827. The next prime is 201270847. The reversal of 201270828 is 828072102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201270795 and 201270804.

It is not an unprimeable number, because it can be changed into a prime (201270827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778 + ... + 20078.

It is an arithmetic number, because the mean of its divisors is an integer number (10809120).

Almost surely, 2201270828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201270828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259418880).

201270828 is an abundant number, since it is smaller than the sum of its proper divisors (317566932).

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

201270828 is a wasteful number, since it uses less digits than its factorization.

201270828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19398 (or 19396 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 201270828 is about 14186.9950306610. The cubic root of 201270828 is about 586.0395745695.

The spelling of 201270828 in words is "two hundred one million, two hundred seventy thousand, eight hundred twenty-eight".