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30780094183 = 191620004957
BaseRepresentation
bin11100101010101000…
…101111011011100111
32221110010011210102021
4130222220233123213
51001014201003213
622050140124011
72136521324626
oct345250573347
987403153367
1030780094183
1112065619373
125b70236607
132b96b986a7
1416bdcb16bd
15c0236cd8d
hex72aa2f6e7

30780094183 has 4 divisors (see below), whose sum is σ = 32400099160. Its totient is φ = 29160089208.

The previous prime is 30780094171. The next prime is 30780094237. The reversal of 30780094183 is 38149008703.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30780094183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30780094883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810002460 + ... + 810002497.

It is an arithmetic number, because the mean of its divisors is an integer number (8100024790).

Almost surely, 230780094183 is an apocalyptic number.

30780094183 is a deficient number, since it is larger than the sum of its proper divisors (1620004977).

30780094183 is a wasteful number, since it uses less digits than its factorization.

30780094183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620004976.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 30780094183 in words is "thirty billion, seven hundred eighty million, ninety-four thousand, one hundred eighty-three".

Divisors: 1 19 1620004957 30780094183