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20274 = 2331109
BaseRepresentation
bin100111100110010
31000210220
410330302
51122044
6233510
7113052
oct47462
930726
1020274
1114261
12b896
1392c7
147562
156019
hex4f32

20274 has 16 divisors (see below), whose sum is σ = 42240. Its totient is φ = 6480.

The previous prime is 20269. The next prime is 20287. The reversal of 20274 is 47202.

Adding to 20274 its reverse (47202), we get a palindrome (67476).

It can be divided in two parts, 202 and 74, that added together give a triangular number (276 = T23).

It is a super-2 number, since 2×202742 = 822070152, which contains 22 as substring.

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, 132 + ... + 240.

It is an arithmetic number, because the mean of its divisors is an integer number (2640).

220274 is an apocalyptic number.

20274 is an abundant number, since it is smaller than the sum of its proper divisors (21966).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21120).

20274 is a wasteful number, since it uses less digits than its factorization.

20274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 20274 is about 142.3867971407. The cubic root of 20274 is about 27.2675727632.

The spelling of 20274 in words is "twenty thousand, two hundred seventy-four", and thus it is an iban number.

Divisors: 1 2 3 6 31 62 93 109 186 218 327 654 3379 6758 10137 20274