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220402 = 27213173
BaseRepresentation
bin110101110011110010
3102012100001
4311303302
524023102
64420214
71605400
oct656362
9365301
10220402
11140656
12a766a
1379420
145a470
1545487
hex35cf2

220402 has 24 divisors (see below), whose sum is σ = 416556. Its totient is φ = 86688.

The previous prime is 220399. The next prime is 220403. The reversal of 220402 is 204022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 441 = 469^2 + 21^2 .

It is not an unprimeable number, because it can be changed into a prime (220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1188 + ... + 1360.

2220402 is an apocalyptic number.

220402 is a deficient number, since it is larger than the sum of its proper divisors (196154).

220402 is a wasteful number, since it uses less digits than its factorization.

220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 220402 is about 469.4699138390. The cubic root of 220402 is about 60.4048546600.

Adding to 220402 its reverse (204022), we get a palindrome (424424).

It can be divided in two parts, 2 and 20402, that multiplied together give a palindrome (40804).

The spelling of 220402 in words is "two hundred twenty thousand, four hundred two", and thus it is an iban number.