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30468773 = 100930197
BaseRepresentation
bin111010000111…
…0101010100101
32010022222022002
41310032222211
530300000043
63005015045
7516660146
oct164165245
963288262
1030468773
1116220705
12a254485
13640a47a
144091acd
152a1cbb8
hex1d0eaa5

30468773 has 4 divisors (see below), whose sum is σ = 30499980. Its totient is φ = 30437568.

The previous prime is 30468751. The next prime is 30468787. The reversal of 30468773 is 37786403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37786403 = 53712951.

It can be written as a sum of positive squares in 2 ways, for example, as 8631844 + 21836929 = 2938^2 + 4673^2 .

It is a cyclic number.

It is not a de Polignac number, because 30468773 - 212 = 30464677 is a prime.

It is a super-2 number, since 2×304687732 = 1856692256251058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30468703) 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, 14090 + ... + 16107.

It is an arithmetic number, because the mean of its divisors is an integer number (7624995).

Almost surely, 230468773 is an apocalyptic number.

It is an amenable number.

30468773 is a deficient number, since it is larger than the sum of its proper divisors (31207).

30468773 is a wasteful number, since it uses less digits than its factorization.

30468773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31206.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 30468773 is about 5519.8526248443. The cubic root of 30468773 is about 312.3333229558. Note that the first 4 decimals are identical.

The spelling of 30468773 in words is "thirty million, four hundred sixty-eight thousand, seven hundred seventy-three".

Divisors: 1 1009 30197 30468773