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30353792 = 277191783
BaseRepresentation
bin111001111001…
…0100110000000
32010010010120112
41303302212000
530232310132
63002330452
7516001010
oct163624600
963103515
1030353792
1116152287
12a1b9a28
13639a031
144061c40
1529e8ab2
hex1cf2980

30353792 has 64 divisors (see below), whose sum is σ = 72787200. Its totient is φ = 12317184.

The previous prime is 30353737. The next prime is 30353819. The reversal of 30353792 is 29735303.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 16133 + ... + 17915.

It is an arithmetic number, because the mean of its divisors is an integer number (1137300).

Almost surely, 230353792 is an apocalyptic number.

30353792 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30353792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36393600).

30353792 is an abundant number, since it is smaller than the sum of its proper divisors (42433408).

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

30353792 is a wasteful number, since it uses less digits than its factorization.

30353792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 32.

The square root of 30353792 is about 5509.4275564708. The cubic root of 30353792 is about 311.9399402254.

The spelling of 30353792 in words is "thirty million, three hundred fifty-three thousand, seven hundred ninety-two".

Divisors: 1 2 4 7 8 14 16 19 28 32 38 56 64 76 112 128 133 152 224 266 304 448 532 608 896 1064 1216 1783 2128 2432 3566 4256 7132 8512 12481 14264 17024 24962 28528 33877 49924 57056 67754 99848 114112 135508 199696 228224 237139 271016 399392 474278 542032 798784 948556 1084064 1597568 1897112 2168128 3794224 4336256 7588448 15176896 30353792