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30705514 = 272193251
BaseRepresentation
bin111010100100…
…0011101101010
32010210000001021
41311020131222
530330034024
63014043054
7521664310
oct165103552
963700037
1030705514
1116372564
12a34948a
136491158
1441140b0
152a67de4
hex1d4876a

30705514 has 8 divisors (see below), whose sum is σ = 52638048. Its totient is φ = 13159500.

The previous prime is 30705511. The next prime is 30705551. The reversal of 30705514 is 41550703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30705511) 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, 1096612 + ... + 1096639.

It is an arithmetic number, because the mean of its divisors is an integer number (6579756).

Almost surely, 230705514 is an apocalyptic number.

30705514 is a deficient number, since it is larger than the sum of its proper divisors (21932534).

30705514 is a wasteful number, since it uses less digits than its factorization.

30705514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193260.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 30705514 is about 5541.2556338794. The cubic root of 30705514 is about 313.1401754524.

The spelling of 30705514 in words is "thirty million, seven hundred five thousand, five hundred fourteen".

Divisors: 1 2 7 14 2193251 4386502 15352757 30705514