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30288100 = 22521392179
BaseRepresentation
bin111001110001…
…0100011100100
32002222210110111
41303202203210
530223204400
63001102404
7515305333
oct163424344
962883414
1030288100
1116107997
12a187a04
13637616b
144045d1a
1529d43ba
hex1ce28e4

30288100 has 36 divisors (see below), whose sum is σ = 66228400. Its totient is φ = 12022560.

The previous prime is 30288061. The next prime is 30288113. The reversal of 30288100 is 188203.

It is a super-2 number, since 2×302881002 = 1834738003220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12811 + ... + 14989.

Almost surely, 230288100 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 30288100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33114200).

30288100 is an abundant number, since it is smaller than the sum of its proper divisors (35940300).

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

30288100 is a wasteful number, since it uses less digits than its factorization.

30288100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 30288100 is about 5503.4625464338. The cubic root of 30288100 is about 311.7147431086.

The spelling of 30288100 in words is "thirty million, two hundred eighty-eight thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 139 278 556 695 1390 2179 2780 3475 4358 6950 8716 10895 13900 21790 43580 54475 108950 217900 302881 605762 1211524 1514405 3028810 6057620 7572025 15144050 30288100