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12200240 = 2451311731
BaseRepresentation
bin101110100010…
…100100110000
3211221211120202
4232202210300
511110401430
61113254332
7205462133
oct56424460
924854522
1012200240
116983248
1241043a8
1326b21a0
14189821a
15110ed45
hexba2930

12200240 has 40 divisors (see below), whose sum is σ = 30550128. Its totient is φ = 4504320.

The previous prime is 12200239. The next prime is 12200263. The reversal of 12200240 is 4200221.

Adding to 12200240 its reverse (4200221), we get a palindrome (16400461).

It is a tau number, because it is divible by the number of its divisors (40).

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, 4826 + ... + 6905.

Almost surely, 212200240 is an apocalyptic number.

12200240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200240 is an abundant number, since it is smaller than the sum of its proper divisors (18349888).

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

12200240 is a wasteful number, since it uses less digits than its factorization.

12200240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11757 (or 11751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 12200240 is about 3492.8841950457. The cubic root of 12200240 is about 230.2092613454.

The spelling of 12200240 in words is "twelve million, two hundred thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1040 11731 23462 46924 58655 93848 117310 152503 187696 234620 305006 469240 610012 762515 938480 1220024 1525030 2440048 3050060 6100120 12200240