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302642 = 23892
BaseRepresentation
bin1001001111000110010
3120101010222
41021320302
534141032
610253042
72400224
oct1117062
9511128
10302642
1119741a
12127182
13a79a2
147c414
155ea12
hex49e32

302642 has 6 divisors (see below), whose sum is σ = 455133. Its totient is φ = 150932.

The previous prime is 302629. The next prime is 302647. The reversal of 302642 is 246203.

Multipling 302642 by its product of nonzero digits (288), we get a square (87160896 = 93362).

Adding to 302642 its reverse (246203), we get a palindrome (548845).

302642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 279841 + 22801 = 529^2 + 151^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=389.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 302642.

It is not an unprimeable number, because it can be changed into a prime (302647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 584 + ... + 972.

2302642 is an apocalyptic number.

302642 is a deficient number, since it is larger than the sum of its proper divisors (152491).

302642 is an frugal number, since it uses more digits than its factorization.

302642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 302642 is about 550.1290757631. The cubic root of 302642 is about 67.1392366928.

The spelling of 302642 in words is "three hundred two thousand, six hundred forty-two".

Divisors: 1 2 389 778 151321 302642