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30208469 = 891312591
BaseRepresentation
bin111001100111…
…1000111010101
32002211202020012
41303033013111
530213132334
62555250005
7514524224
oct163170725
962752205
1030208469
1116063085
12a149905
136348b45
144024cbb
1529ba9ce
hex1ccf1d5

30208469 has 8 divisors (see below), whose sum is σ = 30792960. Its totient is φ = 29629600.

The previous prime is 30208457. The next prime is 30208483. The reversal of 30208469 is 96480203.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30208469 is a prime.

It is a super-2 number, since 2×302084692 = 1825103198647922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30208429) 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, 10364 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (3849120).

Almost surely, 230208469 is an apocalyptic number.

It is an amenable number.

30208469 is a deficient number, since it is larger than the sum of its proper divisors (584491).

30208469 is a wasteful number, since it uses less digits than its factorization.

30208469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30208469 is about 5496.2231577693. The cubic root of 30208469 is about 311.4413250335.

The spelling of 30208469 in words is "thirty million, two hundred eight thousand, four hundred sixty-nine".

Divisors: 1 89 131 2591 11659 230599 339421 30208469