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BaseRepresentation
bin100111011011…
…0110000110110
31102220020000200
41032312300312
520242442132
62015021330
7340463613
oct116666066
942806020
1020671542
1110739921
126b0a846
134389ca8
142a6150a
151c34d7c
hex13b6c36

20671542 has 24 divisors (see below), whose sum is σ = 45189144. Its totient is φ = 6828864.

The previous prime is 20671531. The next prime is 20671543. The reversal of 20671542 is 24517602.

It is a tcefrep number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20671543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3048 + ... + 7115.

It is an arithmetic number, because the mean of its divisors is an integer number (1882881).

Almost surely, 220671542 is an apocalyptic number.

20671542 is an abundant number, since it is smaller than the sum of its proper divisors (24517602).

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

20671542 is a wasteful number, since it uses less digits than its factorization.

20671542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284 (or 10281 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20671542 is about 4546.5967492180. The cubic root of 20671542 is about 274.4464545642.

The spelling of 20671542 in words is "twenty million, six hundred seventy-one thousand, five hundred forty-two".