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20416742 = 233130841
BaseRepresentation
bin100110111100…
…0100011100110
31102102021111122
41031320203212
520211313432
62005333542
7335353013
oct115704346
942367448
1020416742
1110585445
126a072b2
1342cb018
1429d670a
151bd4612
hex13788e6

20416742 has 8 divisors (see below), whose sum is σ = 30718632. Its totient is φ = 10177200.

The previous prime is 20416741. The next prime is 20416771. The reversal of 20416742 is 24761402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20416741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14759 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (3839829).

Almost surely, 220416742 is an apocalyptic number.

20416742 is a deficient number, since it is larger than the sum of its proper divisors (10301890).

20416742 is a wasteful number, since it uses less digits than its factorization.

20416742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31174.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20416742 is about 4518.4889067032. The cubic root of 20416742 is about 273.3141691237.

The spelling of 20416742 in words is "twenty million, four hundred sixteen thousand, seven hundred forty-two".

Divisors: 1 2 331 662 30841 61682 10208371 20416742