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30092838 = 237963487
BaseRepresentation
bin111001011001…
…0111000100110
32002121212121120
41302302320212
530200432323
62552554410
7513533136
oct162627046
962555546
1030092838
1115a94216
12a0b2a06
136308319
143dd4ac6
1529965e3
hex1cb2e26

30092838 has 16 divisors (see below), whose sum is σ = 60948480. Its totient is φ = 9903816.

The previous prime is 30092837. The next prime is 30092857. The reversal of 30092838 is 83829003.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30092799 and 30092808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30092833) 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 7 ways as a sum of consecutive naturals, for example, 31270 + ... + 32217.

It is an arithmetic number, because the mean of its divisors is an integer number (3809280).

Almost surely, 230092838 is an apocalyptic number.

30092838 is an abundant number, since it is smaller than the sum of its proper divisors (30855642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30092838 is a wasteful number, since it uses less digits than its factorization.

30092838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63571.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 30092838 is about 5485.6939396944. The cubic root of 30092838 is about 311.0434419246.

The spelling of 30092838 in words is "thirty million, ninety-two thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 79 158 237 474 63487 126974 190461 380922 5015473 10030946 15046419 30092838