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20120607 = 3213237477
BaseRepresentation
bin100110011000…
…0010000011111
31101212020021200
41030300100133
520122324412
61555130543
7333010443
oct114602037
941766250
1020120607
11103a2a01
1268a3a53
1342262b0
14295a823
151b769dc
hex133041f

20120607 has 24 divisors (see below), whose sum is σ = 32663904. Its totient is φ = 11841984.

The previous prime is 20120543. The next prime is 20120623. The reversal of 20120607 is 70602102.

It is a happy number.

It is not a de Polignac number, because 20120607 - 26 = 20120543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120657) 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 23 ways as a sum of consecutive naturals, for example, 1048 + ... + 6429.

It is an arithmetic number, because the mean of its divisors is an integer number (1360996).

Almost surely, 220120607 is an apocalyptic number.

20120607 is a deficient number, since it is larger than the sum of its proper divisors (12543297).

20120607 is a wasteful number, since it uses less digits than its factorization.

20120607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7519 (or 7516 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20120607 is about 4485.5999598716. The cubic root of 20120607 is about 271.9862981492.

Adding to 20120607 its reverse (70602102), we get a palindrome (90722709).

The spelling of 20120607 in words is "twenty million, one hundred twenty thousand, six hundred seven".

Divisors: 1 3 9 13 23 39 69 117 207 299 897 2691 7477 22431 67293 97201 171971 291603 515913 874809 1547739 2235623 6706869 20120607