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1230151680 = 2133254771
BaseRepresentation
bin100100101010010…
…1010000000000000
310011201202011212100
41021110222000000
510004404323210
6322022230400
742325055022
oct11124520000
93151664770
101230151680
1158143018a
122a3b85400
13167b20504
14b953c012
1572ee45c0
hex4952a000

1230151680 has 336 divisors, whose sum is σ = 4416332544. Its totient is φ = 316538880.

The previous prime is 1230151679. The next prime is 1230151717. The reversal of 1230151680 is 861510321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17326045 + ... + 17326115.

Almost surely, 21230151680 is an apocalyptic number.

1230151680 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 1230151680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2208166272).

1230151680 is an abundant number, since it is smaller than the sum of its proper divisors (3186180864).

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

1230151680 is an equidigital number, since it uses as much as digits as its factorization.

1230151680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1230151680 is about 35073.5182153145. The cubic root of 1230151680 is about 1071.4853102143.

The spelling of 1230151680 in words is "one billion, two hundred thirty million, one hundred fifty-one thousand, six hundred eighty".