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30185047200 = 25352711231479
BaseRepresentation
bin11100000111001010…
…110100010010100000
32212220122111021102010
4130013022310102200
5443304333002300
621511122152520
72116004445030
oct340712642240
985818437363
1030185047200
111188a743800
125a24ab2740
132b00815399
141664c578c0
15bb9ecca50
hex7072b44a0

30185047200 has 864 divisors, whose sum is σ = 127671828480. Its totient is φ = 6057216000.

The previous prime is 30185047159. The next prime is 30185047237. The reversal of 30185047200 is 274058103.

It is a super-2 number, since 2×301850472002 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 63016561 + ... + 63017039.

It is an arithmetic number, because the mean of its divisors is an integer number (147768320).

Almost surely, 230185047200 is an apocalyptic number.

30185047200 is a gapful number since it is divisible by the number (30) 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 30185047200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63835914240).

30185047200 is an abundant number, since it is smaller than the sum of its proper divisors (97486781280).

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

30185047200 is a wasteful number, since it uses less digits than its factorization.

30185047200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 30185047200 in words is "thirty billion, one hundred eighty-five million, forty-seven thousand, two hundred".