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30053808 = 243373953
BaseRepresentation
bin111001010100…
…1010110110000
32002112220002000
41302221112300
530143210213
62552054000
7513311301
oct162512660
962486060
1030053808
1115a67964
12a094300
1362c3625
143dc47a8
152989c73
hex1ca95b0

30053808 has 80 divisors (see below), whose sum is σ = 87539040. Its totient is φ = 9870336.

The previous prime is 30053791. The next prime is 30053843. The reversal of 30053808 is 80835003.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31060 + ... + 32012.

It is an arithmetic number, because the mean of its divisors is an integer number (1094238).

Almost surely, 230053808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30053808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43769520).

30053808 is an abundant number, since it is smaller than the sum of its proper divisors (57485232).

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

30053808 is a wasteful number, since it uses less digits than its factorization.

30053808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30053808 is about 5482.1353503904. The cubic root of 30053808 is about 310.9089107137.

The spelling of 30053808 in words is "thirty million, fifty-three thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 73 108 144 146 216 219 292 432 438 584 657 876 953 1168 1314 1752 1906 1971 2628 2859 3504 3812 3942 5256 5718 7624 7884 8577 10512 11436 15248 15768 17154 22872 25731 31536 34308 45744 51462 68616 69569 102924 137232 139138 205848 208707 278276 411696 417414 556552 626121 834828 1113104 1252242 1669656 1878363 2504484 3339312 3756726 5008968 7513452 10017936 15026904 30053808