Search a number
-
+
30092909 = 7211311801
BaseRepresentation
bin111001011001…
…0111001101101
32002121212201012
41302302321231
530200433114
62552555005
7513533300
oct162627155
962555635
1030092909
1115a94280
12a0b2a65
136308372
143dd4b37
15299663e
hex1cb2e6d

30092909 has 24 divisors (see below), whose sum is σ = 39442176. Its totient is φ = 22680000.

The previous prime is 30092869. The next prime is 30092911. The reversal of 30092909 is 90929003.

It is not a de Polignac number, because 30092909 - 212 = 30088813 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 (30092929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15809 + ... + 17609.

It is an arithmetic number, because the mean of its divisors is an integer number (1643424).

Almost surely, 230092909 is an apocalyptic number.

It is an amenable number.

30092909 is a deficient number, since it is larger than the sum of its proper divisors (9349267).

30092909 is a wasteful number, since it uses less digits than its factorization.

30092909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 30092909 is about 5485.7004110688. The cubic root of 30092909 is about 311.0436865461.

The spelling of 30092909 in words is "thirty million, ninety-two thousand, nine hundred nine".

Divisors: 1 7 11 31 49 77 217 341 539 1519 1801 2387 12607 16709 19811 55831 88249 138677 390817 614141 970739 2735719 4298987 30092909