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30083943 = 325513931
BaseRepresentation
bin111001011000…
…0101101100111
32002121102102010
41302300231213
530200141233
62552445303
7513465201
oct162605547
962542363
1030083943
1115a8856a
12a0a9833
136304266
143dd1771
152993b63
hex1cb0b67

30083943 has 8 divisors (see below), whose sum is σ = 40137856. Its totient is φ = 20043000.

The previous prime is 30083941. The next prime is 30083947. The reversal of 30083943 is 34938003.

It is a happy number.

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

It is not a de Polignac number, because 30083943 - 21 = 30083941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30083943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30083941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5688 + ... + 9618.

It is an arithmetic number, because the mean of its divisors is an integer number (5017232).

Almost surely, 230083943 is an apocalyptic number.

30083943 is a deficient number, since it is larger than the sum of its proper divisors (10053913).

30083943 is a wasteful number, since it uses less digits than its factorization.

30083943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 30083943 is about 5484.8831345800. The cubic root of 30083943 is about 311.0127922834.

The spelling of 30083943 in words is "thirty million, eighty-three thousand, nine hundred forty-three".

Divisors: 1 3 2551 3931 7653 11793 10027981 30083943