Search a number
-
+
30976977430 = 257442528249
BaseRepresentation
bin11100110110010111…
…110010101000010110
32221221211122111110101
4130312113302220112
51001420101234210
622121452044314
72144431651360
oct346627625026
987854574411
1030976977430
11121567726a3
12600616369a
132bc8901159
1416dc0c1d30
15c147ada3a
hex7365f2a16

30976977430 has 16 divisors (see below), whose sum is σ = 63724068000. Its totient is φ = 10620677952.

The previous prime is 30976977401. The next prime is 30976977439. The reversal of 30976977430 is 3477967903.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30976977439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221264055 + ... + 221264194.

It is an arithmetic number, because the mean of its divisors is an integer number (3982754250).

Almost surely, 230976977430 is an apocalyptic number.

30976977430 is an abundant number, since it is smaller than the sum of its proper divisors (32747090570).

30976977430 is a wasteful number, since it uses less digits than its factorization.

30976977430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442528263.

The product of its (nonzero) digits is 6001128, while the sum is 55.

The spelling of 30976977430 in words is "thirty billion, nine hundred seventy-six million, nine hundred seventy-seven thousand, four hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 442528249 885056498 2212641245 3097697743 4425282490 6195395486 15488488715 30976977430