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20122386 = 2313125601
BaseRepresentation
bin100110011000…
…0101100010010
31101212022201120
41030300230102
520122404021
61555143110
7333015564
oct114605422
941768646
1020122386
11103a4279
1268a4a96
13422704b
14295b334
151b772c6
hex1330b12

20122386 has 16 divisors (see below), whose sum is σ = 40553568. Its totient is φ = 6656000.

The previous prime is 20122369. The next prime is 20122397. The reversal of 20122386 is 68322102.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12015 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (2534598).

Almost surely, 220122386 is an apocalyptic number.

20122386 is an abundant number, since it is smaller than the sum of its proper divisors (20431182).

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

20122386 is a wasteful number, since it uses less digits than its factorization.

20122386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25737.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20122386 is about 4485.7982567209. The cubic root of 20122386 is about 271.9943139671.

Adding to 20122386 its reverse (68322102), we get a palindrome (88444488).

The spelling of 20122386 in words is "twenty million, one hundred twenty-two thousand, three hundred eighty-six".

Divisors: 1 2 3 6 131 262 393 786 25601 51202 76803 153606 3353731 6707462 10061193 20122386