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1230750720 = 21033529307
BaseRepresentation
bin100100101011011…
…1100010000000000
310011202212121121000
41021112330100000
510010033010340
6322043132000
742333131343
oct11126742000
93152777530
101230750720
115817aa261
122a4214000
13167ca0084
14b965645a
15730b1d30
hex495bc400

1230750720 has 352 divisors, whose sum is σ = 4539427200. Its totient is φ = 315850752.

The previous prime is 1230750709. The next prime is 1230750733. The reversal of 1230750720 is 270570321.

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

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 31 ways as a sum of consecutive naturals, for example, 4008807 + ... + 4009113.

It is an arithmetic number, because the mean of its divisors is an integer number (12896100).

Almost surely, 21230750720 is an apocalyptic number.

1230750720 is a gapful number since it is divisible by the number (10) 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 1230750720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2269713600).

1230750720 is an abundant number, since it is smaller than the sum of its proper divisors (3308676480).

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

1230750720 is a wasteful number, since it uses less digits than its factorization.

1230750720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1230750720 is about 35082.0569522370. The cubic root of 1230750720 is about 1071.6592070356.

The spelling of 1230750720 in words is "one billion, two hundred thirty million, seven hundred fifty thousand, seven hundred twenty".