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30452121600 = 21535212391
BaseRepresentation
bin11100010111000101…
…101000000000000000
32220121021001001121120
4130113011220000000
5444331220342400
621553422352240
72125426522425
oct342705500000
986537031546
1030452121600
1111a0747974a
125a9a42b680
132b43c55684
14168c4d9d4c
15bd3685ca0
hex717168000

30452121600 has 192 divisors, whose sum is σ = 100701605280. Its totient is φ = 8119910400.

The previous prime is 30452121599. The next prime is 30452121629. The reversal of 30452121600 is 612125403.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 11 ways as a sum of consecutive naturals, for example, 2451405 + ... + 2463795.

Almost surely, 230452121600 is an apocalyptic number.

30452121600 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 30452121600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50350802640).

30452121600 is an abundant number, since it is smaller than the sum of its proper divisors (70249483680).

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

30452121600 is an equidigital number, since it uses as much as digits as its factorization.

30452121600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12434 (or 12401 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 30452121600 in words is "thirty billion, four hundred fifty-two million, one hundred twenty-one thousand, six hundred".