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30354912 = 253472239
BaseRepresentation
bin111001111001…
…0110111100000
32010010012010000
41303302313200
530232324122
63002340000
7516004200
oct163626740
963105100
1030354912
1116153105
12a1ba600
13639a6b3
144062400
1529e90ac
hex1cf2de0

30354912 has 180 divisors, whose sum is σ = 104282640. Its totient is φ = 8636544.

The previous prime is 30354901. The next prime is 30354923. The reversal of 30354912 is 21945303.

It is an interprime number because it is at equal distance from previous prime (30354901) and next prime (30354923).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 126889 + ... + 127127.

It is an arithmetic number, because the mean of its divisors is an integer number (579348).

Almost surely, 230354912 is an apocalyptic number.

30354912 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 30354912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52141320).

30354912 is an abundant number, since it is smaller than the sum of its proper divisors (73927728).

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

30354912 is a wasteful number, since it uses less digits than its factorization.

30354912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30354912 is about 5509.5291994870. The cubic root of 30354912 is about 311.9437768513.

The spelling of 30354912 in words is "thirty million, three hundred fifty-four thousand, nine hundred twelve".