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30404469 = 312318233
BaseRepresentation
bin111001111111…
…0111101110101
32010012201002110
41303332331311
530240420334
63003401233
7516301524
oct163767565
963181073
1030404469
1116187367
12a223219
1363b7114
1440764bb
152a08ae9
hex1cfef75

30404469 has 8 divisors (see below), whose sum is σ = 40577152. Its totient is φ = 20250720.

The previous prime is 30404461. The next prime is 30404497. The reversal of 30404469 is 96440403.

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

It is not a de Polignac number, because 30404469 - 23 = 30404461 is a prime.

It is a super-2 number, since 2×304044692 = 1848863470343922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30404461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (5072144).

Almost surely, 230404469 is an apocalyptic number.

It is an amenable number.

30404469 is a deficient number, since it is larger than the sum of its proper divisors (10172683).

30404469 is a wasteful number, since it uses less digits than its factorization.

30404469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9467.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 30404469 is about 5514.0247551131. The cubic root of 30404469 is about 312.1134428860.

The spelling of 30404469 in words is "thirty million, four hundred four thousand, four hundred sixty-nine".

Divisors: 1 3 1231 3693 8233 24699 10134823 30404469