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30239488 = 28196217
BaseRepresentation
bin111001101011…
…0101100000000
32002220022210001
41303112230000
530220130423
63000045344
7515013526
oct163265400
962808701
1030239488
1116084414
12a163854
136359cb6
144032316
1529c4cad
hex1cd6b00

30239488 has 36 divisors (see below), whose sum is σ = 63547960. Its totient is φ = 14321664.

The previous prime is 30239453. The next prime is 30239491. The reversal of 30239488 is 88493203.

It is a super-5 number, since 5×302394885 (a number of 39 digits) contains 55555 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1756 + ... + 7972.

Almost surely, 230239488 is an apocalyptic number.

30239488 is a gapful number since it is divisible by the number (38) 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 30239488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31773980).

30239488 is an abundant number, since it is smaller than the sum of its proper divisors (33308472).

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

30239488 is an equidigital number, since it uses as much as digits as its factorization.

30239488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252 (or 6238 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 30239488 is about 5499.0442806000. The cubic root of 30239488 is about 311.5478877963.

The spelling of 30239488 in words is "thirty million, two hundred thirty-nine thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 16 19 32 38 64 76 128 152 256 304 608 1216 2432 4864 6217 12434 24868 49736 99472 118123 198944 236246 397888 472492 795776 944984 1591552 1889968 3779936 7559872 15119744 30239488