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20028074 = 2111753551
BaseRepresentation
bin100110001100…
…1101010101010
31101200112100112
41030121222222
520111344244
61553134322
7332143613
oct114315252
941615315
1020028074
111033a430
12685a3a2
1341c3141
142934c0a
151b5939e
hex1319aaa

20028074 has 16 divisors (see below), whose sum is σ = 34701696. Its totient is φ = 8568000.

The previous prime is 20028059. The next prime is 20028079. The reversal of 20028074 is 47082002.

It is a super-3 number, since 3×200280743 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20028079) 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, 26402 + ... + 27149.

It is an arithmetic number, because the mean of its divisors is an integer number (2168856).

Almost surely, 220028074 is an apocalyptic number.

20028074 is a deficient number, since it is larger than the sum of its proper divisors (14673622).

20028074 is a wasteful number, since it uses less digits than its factorization.

20028074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53581.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20028074 is about 4475.2736229196. The cubic root of 20028074 is about 271.5687098792.

The spelling of 20028074 in words is "twenty million, twenty-eight thousand, seventy-four".

Divisors: 1 2 11 17 22 34 187 374 53551 107102 589061 910367 1178122 1820734 10014037 20028074