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12220232 = 231527529
BaseRepresentation
bin101110100111…
…011101001000
3211222212000012
4232213131020
511112021412
61113531052
7205604333
oct56473510
924885005
1012220232
116997272
124113a88
1326bb30b
1418a161a
151115c22
hexba7748

12220232 has 8 divisors (see below), whose sum is σ = 22912950. Its totient is φ = 6110112.

The previous prime is 12220217. The next prime is 12220237. The reversal of 12220232 is 23202221.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 5635876 = 2566^2 + 2374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12220237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763757 + ... + 763772.

Almost surely, 212220232 is an apocalyptic number.

It is an amenable number.

12220232 is a deficient number, since it is larger than the sum of its proper divisors (10692718).

12220232 is a wasteful number, since it uses less digits than its factorization.

12220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527535 (or 1527531 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12220232 is about 3495.7448419471. The cubic root of 12220232 is about 230.3349373418.

Adding to 12220232 its reverse (23202221), we get a palindrome (35422453).

The spelling of 12220232 in words is "twelve million, two hundred twenty thousand, two hundred thirty-two".

Divisors: 1 2 4 8 1527529 3055058 6110116 12220232