Search a number
-
+
30780087430 = 2567443103703
BaseRepresentation
bin11100101010101000…
…101101110010000110
32221110010011110011011
4130222220231302012
51001014200244210
622050140032434
72136521266141
oct345250556206
987403143134
1030780087430
1112065614294
125b7023271a
132b96b955b1
1416bdcad058
15c0236ad8a
hex72aa2dc86

30780087430 has 32 divisors (see below), whose sum is σ = 56358561024. Its totient is φ = 12100778976.

The previous prime is 30780087383. The next prime is 30780087463. The reversal of 30780087430 is 3478008703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244959 + ... + 348661.

It is an arithmetic number, because the mean of its divisors is an integer number (1761205032).

Almost surely, 230780087430 is an apocalyptic number.

30780087430 is a deficient number, since it is larger than the sum of its proper divisors (25578473594).

30780087430 is a wasteful number, since it uses less digits than its factorization.

30780087430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104220.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 30780087430 in words is "thirty billion, seven hundred eighty million, eighty-seven thousand, four hundred thirty".

Divisors: 1 2 5 10 67 134 335 443 670 886 2215 4430 29681 59362 103703 148405 207406 296810 518515 1037030 6948101 13896202 34740505 45940429 69481010 91880858 229702145 459404290 3078008743 6156017486 15390043715 30780087430