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1221232 = 24127601
BaseRepresentation
bin100101010001001110000
32022001012211
410222021300
5303034412
642101504
713244305
oct4521160
92261184
101221232
11764591
124aa894
13339b2c
1423b0ac
15191ca7
hex12a270

1221232 has 20 divisors (see below), whose sum is σ = 2388736. Its totient is φ = 604800.

The previous prime is 1221223. The next prime is 1221239. The reversal of 1221232 is 2321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732 + ... + 2332.

21221232 is an apocalyptic number.

It is an amenable number.

1221232 is a deficient number, since it is larger than the sum of its proper divisors (1167504).

1221232 is a wasteful number, since it uses less digits than its factorization.

1221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 730 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 1221232 is about 1105.0936611890. The cubic root of 1221232 is about 106.8889289097. Note that the first 3 decimals are identical.

Adding to 1221232 its reverse (2321221), we get a palindrome (3542453).

The spelling of 1221232 in words is "one million, two hundred twenty-one thousand, two hundred thirty-two".