Search a number
-
+
72830999 = 1014191721
BaseRepresentation
bin1000101011101…
…01000000010111
312002001012100102
410111311000113
5122121042444
611121004315
71543024163
oct425650027
9162035312
1072830999
113812500a
122048369b
1312120287
14995bca3
1565d984e
hex4575017

72830999 has 8 divisors (see below), whose sum is σ = 73770480. Its totient is φ = 71896000.

The previous prime is 72830939. The next prime is 72831001. The reversal of 72830999 is 99903827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72830999 - 212 = 72826903 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 (72830909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41459 + ... + 43179.

It is an arithmetic number, because the mean of its divisors is an integer number (9221310).

Almost surely, 272830999 is an apocalyptic number.

72830999 is a deficient number, since it is larger than the sum of its proper divisors (939481).

72830999 is a wasteful number, since it uses less digits than its factorization.

With its successor (72831000) it forms an eRAP, since the sums of their prime factors are consecutive (2241 and 2242).

72830999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 72830999 is about 8534.1079791622. The cubic root of 72830999 is about 417.6111533081.

The spelling of 72830999 in words is "seventy-two million, eight hundred thirty thousand, nine hundred ninety-nine".

Divisors: 1 101 419 1721 42319 173821 721099 72830999