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30054398 = 2111366109
BaseRepresentation
bin111001010100…
…1011111111110
32002112220212212
41302221133332
530143220043
62552100422
7513313103
oct162513776
962486785
1030054398
1115a68350
12a094712
1362c398a
143dc4aaa
15298a018
hex1ca97fe

30054398 has 8 divisors (see below), whose sum is σ = 49179960. Its totient is φ = 13661080.

The previous prime is 30054389. The next prime is 30054421. The reversal of 30054398 is 89345003.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683033 + ... + 683076.

It is an arithmetic number, because the mean of its divisors is an integer number (6147495).

Almost surely, 230054398 is an apocalyptic number.

30054398 is a deficient number, since it is larger than the sum of its proper divisors (19125562).

30054398 is a wasteful number, since it uses less digits than its factorization.

30054398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366122.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 30054398 is about 5482.1891612749. The cubic root of 30054398 is about 310.9109452319.

Subtracting 30054398 from its reverse (89345003), we obtain a triangular number (59290605 = T10889).

The spelling of 30054398 in words is "thirty million, fifty-four thousand, three hundred ninety-eight".

Divisors: 1 2 11 22 1366109 2732218 15027199 30054398