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30380758 = 271213949
BaseRepresentation
bin111001111100…
…1001011010110
32010011111120021
41303321023112
530234141013
63003055354
7516142432
oct163711326
963144507
1030380758
1116170571
12a21155a
1363a93a5
14406b9c2
152a01a8d
hex1cf92d6

30380758 has 8 divisors (see below), whose sum is σ = 46213200. Its totient is φ = 14976360.

The previous prime is 30380731. The next prime is 30380761. The reversal of 30380758 is 85708303.

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

It is a super-4 number, since 4×303807584 (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106833 + ... + 107116.

It is an arithmetic number, because the mean of its divisors is an integer number (5776650).

Almost surely, 230380758 is an apocalyptic number.

30380758 is a deficient number, since it is larger than the sum of its proper divisors (15832442).

30380758 is a wasteful number, since it uses less digits than its factorization.

30380758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214022.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30380758 is about 5511.8742728767. The cubic root of 30380758 is about 312.0322876404.

The spelling of 30380758 in words is "thirty million, three hundred eighty thousand, seven hundred fifty-eight".

Divisors: 1 2 71 142 213949 427898 15190379 30380758