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404002 = 2202001
BaseRepresentation
bin1100010101000100010
3202112012001
41202220202
5100412002
612354214
73301564
oct1425042
9675161
10404002
11256595
1217596a
13111b71
14a7334
157ea87
hex62a22

404002 has 4 divisors (see below), whose sum is σ = 606006. Its totient is φ = 202000.

The previous prime is 403993. The next prime is 404009. The reversal of 404002 is 200404.

404002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 184041 = 469^2 + 429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 404002.

It is not an unprimeable number, because it can be changed into a prime (404009) by changing a digit.

404002 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100999 + ... + 101002.

2404002 is an apocalyptic number.

404002 is a deficient number, since it is larger than the sum of its proper divisors (202004).

404002 is a wasteful number, since it uses less digits than its factorization.

404002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202003.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 404002 is about 635.6115165728. The cubic root of 404002 is about 73.9255399061.

Adding to 404002 its reverse (200404), we get a palindrome (604406).

The spelling of 404002 in words is "four hundred four thousand, two", and thus it is an iban number.

Divisors: 1 2 202001 404002