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BaseRepresentation
bin111010000010…
…0110111011001
32010020221020102
41310010313121
530242204013
63004105145
7516432134
oct164046731
963227212
1030428633
11161a3534
12a2351b5
1363c5111
14408121b
152a10d58
hex1d04dd9

30428633 has 4 divisors (see below), whose sum is σ = 32030160. Its totient is φ = 28827108.

The previous prime is 30428621. The next prime is 30428687. The reversal of 30428633 is 33682403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33682403 = 91136973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30428633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30428596 and 30428605.

It is not an unprimeable number, because it can be changed into a prime (30428603) 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, 800735 + ... + 800772.

It is an arithmetic number, because the mean of its divisors is an integer number (8007540).

Almost surely, 230428633 is an apocalyptic number.

It is an amenable number.

30428633 is a deficient number, since it is larger than the sum of its proper divisors (1601527).

30428633 is a wasteful number, since it uses less digits than its factorization.

30428633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601526.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 30428633 is about 5516.2154598964. The cubic root of 30428633 is about 312.1961052093.

The spelling of 30428633 in words is "thirty million, four hundred twenty-eight thousand, six hundred thirty-three".

Divisors: 1 19 1601507 30428633