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30438854 = 253287159
BaseRepresentation
bin111010000011…
…1010111000110
32010021110020222
41310013113012
530243020404
63004224342
7516504005
oct164072706
963243228
1030438854
1116200186
12a23b0b2
1363c9974
144084c3c
152a13dbe
hex1d075c6

30438854 has 8 divisors (see below), whose sum is σ = 46519920. Its totient is φ = 14932216.

The previous prime is 30438803. The next prime is 30438871. The reversal of 30438854 is 45883403.

It is a happy number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143474 + ... + 143685.

It is an arithmetic number, because the mean of its divisors is an integer number (5814990).

Almost surely, 230438854 is an apocalyptic number.

30438854 is a deficient number, since it is larger than the sum of its proper divisors (16081066).

30438854 is a wasteful number, since it uses less digits than its factorization.

30438854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287214.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 30438854 is about 5517.1418325071. The cubic root of 30438854 is about 312.2310569292.

The spelling of 30438854 in words is "thirty million, four hundred thirty-eight thousand, eight hundred fifty-four".

Divisors: 1 2 53 106 287159 574318 15219427 30438854