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214130240 = 2651813697
BaseRepresentation
bin11001100001101…
…01111001000000
3112220220221110122
430300311321000
5414304131430
633125315412
75210035262
oct1460657100
9486827418
10214130240
11aa964245
125b865b68
1335493aac
142061db32
1513beaee5
hexcc35e40

214130240 has 56 divisors (see below), whose sum is σ = 512853432. Its totient is φ = 85155840.

The previous prime is 214130227. The next prime is 214130251. The reversal of 214130240 is 42031412.

It can be written as a sum of positive squares in 4 ways, for example, as 14077504 + 200052736 = 3752^2 + 14144^2 .

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, 56072 + ... + 59768.

It is an arithmetic number, because the mean of its divisors is an integer number (9158097).

Almost surely, 2214130240 is an apocalyptic number.

214130240 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 214130240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256426716).

214130240 is an abundant number, since it is smaller than the sum of its proper divisors (298723192).

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

214130240 is a wasteful number, since it uses less digits than its factorization.

214130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 214130240 is about 14633.1896727952. The cubic root of 214130240 is about 598.2637211469.

Adding to 214130240 its reverse (42031412), we get a palindrome (256161652).

The spelling of 214130240 in words is "two hundred fourteen million, one hundred thirty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 181 320 362 724 905 1448 1810 2896 3620 3697 5792 7240 7394 11584 14480 14788 18485 28960 29576 36970 57920 59152 73940 118304 147880 236608 295760 591520 669157 1183040 1338314 2676628 3345785 5353256 6691570 10706512 13383140 21413024 26766280 42826048 53532560 107065120 214130240