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30806254 = 242136587
BaseRepresentation
bin111010110000…
…1000011101110
32010222010020101
41311201003232
530341300004
63020141314
7522564103
oct165410356
963863211
1030806254
1116431216
12a39783a
1364c7c6b
14413caaa
152a87ba4
hex1d610ee

30806254 has 8 divisors (see below), whose sum is σ = 46320408. Its totient is φ = 15366120.

The previous prime is 30806249. The next prime is 30806267. The reversal of 30806254 is 45260803.

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, 17452 + ... + 19135.

It is an arithmetic number, because the mean of its divisors is an integer number (5790051).

Almost surely, 230806254 is an apocalyptic number.

30806254 is a deficient number, since it is larger than the sum of its proper divisors (15514154).

30806254 is a wasteful number, since it uses less digits than its factorization.

30806254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37010.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30806254 is about 5550.3381878945. The cubic root of 30806254 is about 313.4822563040.

The spelling of 30806254 in words is "thirty million, eight hundred six thousand, two hundred fifty-four".

Divisors: 1 2 421 842 36587 73174 15403127 30806254