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20894254 = 283191659
BaseRepresentation
bin100111110110…
…1001000101110
31110022112112021
41033231020232
520322104004
62023500354
7342412123
oct117551056
943275467
1020894254
1110881187
126bb76ba
134437484
142abc74a
151c7ad54
hex13ed22e

20894254 has 16 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 10251640.

The previous prime is 20894231. The next prime is 20894261. The reversal of 20894254 is 45249802.

It is a congruent 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, 31377 + ... + 32035.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 220894254 is an apocalyptic number.

20894254 is a deficient number, since it is larger than the sum of its proper divisors (11039186).

20894254 is a wasteful number, since it uses less digits than its factorization.

20894254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 20894254 is about 4571.0232989999. The cubic root of 20894254 is about 275.4285505474.

The spelling of 20894254 in words is "twenty million, eight hundred ninety-four thousand, two hundred fifty-four".

Divisors: 1 2 83 166 191 382 659 1318 15853 31706 54697 109394 125869 251738 10447127 20894254