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30489674 = 223662819
BaseRepresentation
bin111010001001…
…1110001001010
32010101000222012
41310103301022
530301132144
63005255522
7520105115
oct164236112
963330865
1030489674
1116235386
12a2645a2
136416b37
14409957c
152a23e9e
hex1d13c4a

30489674 has 8 divisors (see below), whose sum is σ = 47723040. Its totient is φ = 14581996.

The previous prime is 30489673. The next prime is 30489703. The reversal of 30489674 is 47698403.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30489671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331364 + ... + 331455.

It is an arithmetic number, because the mean of its divisors is an integer number (5965380).

Almost surely, 230489674 is an apocalyptic number.

30489674 is a deficient number, since it is larger than the sum of its proper divisors (17233366).

30489674 is a wasteful number, since it uses less digits than its factorization.

30489674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662844.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 30489674 is about 5521.7455573396. The cubic root of 30489674 is about 312.4047248754.

The spelling of 30489674 in words is "thirty million, four hundred eighty-nine thousand, six hundred seventy-four".

Divisors: 1 2 23 46 662819 1325638 15244837 30489674