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1220230302 = 23211963847
BaseRepresentation
bin100100010111011…
…0011110010011110
310011001002010021220
41020232303302132
54444334332202
6321025434210
742144533514
oct11056636236
93131063256
101220230302
115768740a5
122a079b966
13165a58685
14b80b84b4
15721d4abc
hex48bb3c9e

1220230302 has 16 divisors (see below), whose sum is σ = 2452029312. Its totient is φ = 404815320.

The previous prime is 1220230283. The next prime is 1220230313. The reversal of 1220230302 is 2030320221.

It is a super-2 number, since 2×12202303022 = 2977923979838022408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480658 + ... + 483189.

It is an arithmetic number, because the mean of its divisors is an integer number (153251832).

Almost surely, 21220230302 is an apocalyptic number.

1220230302 is an abundant number, since it is smaller than the sum of its proper divisors (1231799010).

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

1220230302 is a wasteful number, since it uses less digits than its factorization.

1220230302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964063.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1220230302 is about 34931.7950011161. The cubic root of 1220230302 is about 1068.5969621300.

Adding to 1220230302 its reverse (2030320221), we get a palindrome (3250550523).

The spelling of 1220230302 in words is "one billion, two hundred twenty million, two hundred thirty thousand, three hundred two".

Divisors: 1 2 3 6 211 422 633 1266 963847 1927694 2891541 5783082 203371717 406743434 610115151 1220230302