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1422446221 = 7661307423
BaseRepresentation
bin101010011001000…
…1100111010001101
310200010120202101101
41110302030322031
510403121234341
6353051543101
750151410350
oct12462147215
93603522341
101422446221
1166aa2a999
1233845aa91
1319890a471
14d6cb6297
1584d2a831
hex54c8ce8d

1422446221 has 8 divisors (see below), whose sum is σ = 1628117504. Its totient is φ = 1217391120.

The previous prime is 1422446189. The next prime is 1422446227. The reversal of 1422446221 is 1226442241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1422446221 - 25 = 1422446189 is a prime.

It is a super-3 number, since 3×14224462213 (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422446221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422446227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149085 + ... + 158338.

It is an arithmetic number, because the mean of its divisors is an integer number (203514688).

Almost surely, 21422446221 is an apocalyptic number.

It is an amenable number.

1422446221 is a deficient number, since it is larger than the sum of its proper divisors (205671283).

1422446221 is an equidigital number, since it uses as much as digits as its factorization.

1422446221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308091.

The product of its digits is 6144, while the sum is 28.

The square root of 1422446221 is about 37715.3313786317. The cubic root of 1422446221 is about 1124.6359239341.

Adding to 1422446221 its reverse (1226442241), we get a palindrome (2648888462).

The spelling of 1422446221 in words is "one billion, four hundred twenty-two million, four hundred forty-six thousand, two hundred twenty-one".

Divisors: 1 7 661 4627 307423 2151961 203206603 1422446221