Search a number
-
+
30782008942 = 215391004471
BaseRepresentation
bin11100101010110000…
…000010111001101110
32221110020210001222021
4130222300002321232
51001020143241232
622050245140354
72136543521206
oct345260027156
987406701867
1030782008942
1112066706a13
125b709ba6ba
132b973b9099
1416c024d406
15c025ea397
hex72ac02e6e

30782008942 has 4 divisors (see below), whose sum is σ = 46173013416. Its totient is φ = 15391004470.

The previous prime is 30782008931. The next prime is 30782008963. The reversal of 30782008942 is 24980028703.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 7695502234 + ... + 7695502237.

It is an arithmetic number, because the mean of its divisors is an integer number (11543253354).

Almost surely, 230782008942 is an apocalyptic number.

30782008942 is a deficient number, since it is larger than the sum of its proper divisors (15391004474).

30782008942 is a wasteful number, since it uses less digits than its factorization.

30782008942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15391004473.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 30782008942 in words is "thirty billion, seven hundred eighty-two million, eight thousand, nine hundred forty-two".

Divisors: 1 2 15391004471 30782008942