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30474321 = 310158107
BaseRepresentation
bin111010001000…
…0000001010001
32010100020220120
41310100001101
530300134241
63005100453
7520012263
oct164200121
963306816
1030474321
1116224899
12a257729
13640cb57
144093b33
152a1e666
hex1d10051

30474321 has 4 divisors (see below), whose sum is σ = 40632432. Its totient is φ = 20316212.

The previous prime is 30474313. The next prime is 30474337. The reversal of 30474321 is 12347403.

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: 12347403 = 34115801.

It is a cyclic number.

It is not a de Polignac number, because 30474321 - 23 = 30474313 is a prime.

It is a super-2 number, since 2×304743212 = 1857368480822082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30474291 and 30474300.

It is not an unprimeable number, because it can be changed into a prime (30474391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5079051 + ... + 5079056.

It is an arithmetic number, because the mean of its divisors is an integer number (10158108).

Almost surely, 230474321 is an apocalyptic number.

It is an amenable number.

30474321 is a deficient number, since it is larger than the sum of its proper divisors (10158111).

30474321 is a wasteful number, since it uses less digits than its factorization.

30474321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10158110.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 30474321 is about 5520.3551516184. The cubic root of 30474321 is about 312.3522791957.

The spelling of 30474321 in words is "thirty million, four hundred seventy-four thousand, three hundred twenty-one".

Divisors: 1 3 10158107 30474321