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30788208000 = 2733531121931
BaseRepresentation
bin11100101011000111…
…101100010110000000
32221110200110000111000
4130223013230112000
51001023240124000
622051030052000
72136650310234
oct345307542600
987420400430
1030788208000
111206a160400
125b72aaa000
132b98779874
1416c0dc45c4
15c02e22000
hex72b1ec580

30788208000 has 1536 divisors, whose sum is σ = 135442944000. Its totient is φ = 6842880000.

The previous prime is 30788207977. The next prime is 30788208001. The reversal of 30788208000 is 80288703.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30788208001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 993167985 + ... + 993168015.

It is an arithmetic number, because the mean of its divisors is an integer number (88179000).

Almost surely, 230788208000 is an apocalyptic number.

30788208000 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 30788208000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67721472000).

30788208000 is an abundant number, since it is smaller than the sum of its proper divisors (104654736000).

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

30788208000 is a wasteful number, since it uses less digits than its factorization.

30788208000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 30788208000 in words is "thirty billion, seven hundred eighty-eight million, two hundred eight thousand".