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30660943 = 591313967
BaseRepresentation
bin111010011110…
…1100101001111
32010200201220111
41310331211033
530322122233
63013100451
7521420335
oct164754517
963621814
1030660943
1116342025
12a327727
136476a91
144101b55
152a59acd
hex1d3d94f

30660943 has 8 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 29903640.

The previous prime is 30660941. The next prime is 30660961. The reversal of 30660943 is 34906603.

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

It is a cyclic number.

It is not a de Polignac number, because 30660943 - 21 = 30660941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30660941) 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, 5746 + ... + 9712.

It is an arithmetic number, because the mean of its divisors is an integer number (3928320).

Almost surely, 230660943 is an apocalyptic number.

30660943 is a deficient number, since it is larger than the sum of its proper divisors (765617).

30660943 is a wasteful number, since it uses less digits than its factorization.

30660943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 30660943 is about 5537.2324314589. The cubic root of 30660943 is about 312.9885878108.

The spelling of 30660943 in words is "thirty million, six hundred sixty thousand, nine hundred forty-three".

Divisors: 1 59 131 3967 7729 234053 519677 30660943