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12220607 = 72576793
BaseRepresentation
bin101110100111…
…100010111111
3211222212112002
4232213202333
511112024412
61113532515
7205605410
oct56474277
924885462
1012220607
116997583
12411413b
1326bb539
1418a1807
151115dc2
hexba78bf

12220607 has 8 divisors (see below), whose sum is σ = 14022816. Its totient is φ = 10432512.

The previous prime is 12220601. The next prime is 12220609. The reversal of 12220607 is 70602221.

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 12220607 - 26 = 12220543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220601) 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, 1598 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (1752852).

Almost surely, 212220607 is an apocalyptic number.

12220607 is a deficient number, since it is larger than the sum of its proper divisors (1802209).

12220607 is an equidigital number, since it uses as much as digits as its factorization.

12220607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7057.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12220607 is about 3495.7984781735. The cubic root of 12220607 is about 230.3372933996.

Adding to 12220607 its reverse (70602221), we get a palindrome (82822828).

The spelling of 12220607 in words is "twelve million, two hundred twenty thousand, six hundred seven".

Divisors: 1 7 257 1799 6793 47551 1745801 12220607