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30492001 = 101301901
BaseRepresentation
bin111010001010…
…0010101100001
32010101011011101
41310110111201
530301221001
63005314401
7520114651
oct164242541
963334141
1030492001
1116237101
12a265a01
136417c07
14409a361
152a24a01
hex1d14561

30492001 has 4 divisors (see below), whose sum is σ = 30794004. Its totient is φ = 30190000.

The previous prime is 30491969. The next prime is 30492041. The reversal of 30492001 is 10029403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10029403 = 23436061.

It can be written as a sum of positive squares in 2 ways, for example, as 22657600 + 7834401 = 4760^2 + 2799^2 .

It is a cyclic number.

It is not a de Polignac number, because 30492001 - 25 = 30491969 is a prime.

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 30492001.

It is not an unprimeable number, because it can be changed into a prime (30492041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150850 + ... + 151051.

It is an arithmetic number, because the mean of its divisors is an integer number (7698501).

Almost surely, 230492001 is an apocalyptic number.

It is an amenable number.

30492001 is a deficient number, since it is larger than the sum of its proper divisors (302003).

30492001 is a wasteful number, since it uses less digits than its factorization.

30492001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302002.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 30492001 is about 5521.9562656725. The cubic root of 30492001 is about 312.4126723454.

It can be divided in two parts, 3049 and 2001, that added together give a triangular number (5050 = T100).

The spelling of 30492001 in words is "thirty million, four hundred ninety-two thousand, one".

Divisors: 1 101 301901 30492001