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30208670 = 2519158993
BaseRepresentation
bin111001100111…
…1001010011110
32002211202111122
41303033022132
530213134140
62555250542
7514524632
oct163171236
962752448
1030208670
1116063248
12a149a52
136348c6b
144024dc2
1529baab5
hex1ccf29e

30208670 has 16 divisors (see below), whose sum is σ = 57237840. Its totient is φ = 11447424.

The previous prime is 30208667. The next prime is 30208679. The reversal of 30208670 is 7680203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30208679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79307 + ... + 79686.

It is an arithmetic number, because the mean of its divisors is an integer number (3577365).

Almost surely, 230208670 is an apocalyptic number.

30208670 is a deficient number, since it is larger than the sum of its proper divisors (27029170).

30208670 is a wasteful number, since it uses less digits than its factorization.

30208670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159019.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30208670 is about 5496.2414430227. The cubic root of 30208670 is about 311.4420157843.

Adding to 30208670 its reverse (7680203), we get a palindrome (37888873).

The spelling of 30208670 in words is "thirty million, two hundred eight thousand, six hundred seventy".

Divisors: 1 2 5 10 19 38 95 190 158993 317986 794965 1589930 3020867 6041734 15104335 30208670