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30345274 = 2157241401
BaseRepresentation
bin111001111000…
…0100000111010
32010002200220001
41303300200322
530232022044
63002223214
7515634121
oct163604072
963080801
1030345274
1116146943
12a1b4b0a
1363961ab
14405cab8
1529e62d4
hex1cf083a

30345274 has 16 divisors (see below), whose sum is σ = 46112616. Its totient is φ = 14976000.

The previous prime is 30345269. The next prime is 30345313. The reversal of 30345274 is 47254303.

It can be written as a sum of positive squares in 4 ways, for example, as 30327049 + 18225 = 5507^2 + 135^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75474 + ... + 75874.

Almost surely, 230345274 is an apocalyptic number.

30345274 is a deficient number, since it is larger than the sum of its proper divisors (15767342).

30345274 is a wasteful number, since it uses less digits than its factorization.

30345274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 30345274 is about 5508.6544636599. The cubic root of 30345274 is about 311.9107582262.

Adding to 30345274 its reverse (47254303), we get a palindrome (77599577).

The spelling of 30345274 in words is "thirty million, three hundred forty-five thousand, two hundred seventy-four".

Divisors: 1 2 157 241 314 401 482 802 37837 62957 75674 96641 125914 193282 15172637 30345274