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214109280 = 253257111931
BaseRepresentation
bin11001100001100…
…00110001100000
3112220212212201100
430300300301200
5414302444110
633125034400
75206620210
oct1460606140
9486785640
10214109280
11aa94a520
125b855a00
13354873a8
1420616240
1513be4bc0
hexcc30c60

214109280 has 288 divisors, whose sum is σ = 911409408. Its totient is φ = 44467200.

The previous prime is 214109279. The next prime is 214109303. The reversal of 214109280 is 82901412.

It is a tau number, because it is divible by the number of its divisors (288).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109915 + ... + 111845.

It is an arithmetic number, because the mean of its divisors is an integer number (3164616).

Almost surely, 2214109280 is an apocalyptic number.

214109280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214109280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455704704).

214109280 is an abundant number, since it is smaller than the sum of its proper divisors (697300128).

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

214109280 is a wasteful number, since it uses less digits than its factorization.

214109280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 214109280 is about 14632.4734751169. The cubic root of 214109280 is about 598.2442002909.

The spelling of 214109280 in words is "two hundred fourteen million, one hundred nine thousand, two hundred eighty".