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30153826 = 2791391373
BaseRepresentation
bin111001100000…
…1110001100010
32002201222021101
41303001301202
530204410301
62554145014
7514206013
oct163016142
962658241
1030153826
111602601a
12a12216a
13632a001
14400d00a
1529a9701
hex1cc1c62

30153826 has 16 divisors (see below), whose sum is σ = 46166400. Its totient is φ = 14768208.

The previous prime is 30153811. The next prime is 30153833. The reversal of 30153826 is 62835103.

It is a junction number, because it is equal to n+sod(n) for n = 30153794 and 30153803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21276 + ... + 22648.

It is an arithmetic number, because the mean of its divisors is an integer number (2885400).

Almost surely, 230153826 is an apocalyptic number.

30153826 is the 2746-th decagonal number.

30153826 is a deficient number, since it is larger than the sum of its proper divisors (16012574).

30153826 is a wasteful number, since it uses less digits than its factorization.

30153826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30153826 is about 5491.2499487822. The cubic root of 30153826 is about 311.2534267350.

Adding to 30153826 its reverse (62835103), we get a palindrome (92988929).

The spelling of 30153826 in words is "thirty million, one hundred fifty-three thousand, eight hundred twenty-six".

Divisors: 1 2 79 139 158 278 1373 2746 10981 21962 108467 190847 216934 381694 15076913 30153826