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30052979 = 119112999
BaseRepresentation
bin111001010100…
…1001001110011
32002112211221022
41302221021303
530143143404
62552050055
7513306005
oct162511163
962484838
1030052979
1115a67280
12a09392b
1362c3138
143dc4375
1529898be
hex1ca9273

30052979 has 8 divisors (see below), whose sum is σ = 32832000. Its totient is φ = 27281800.

The previous prime is 30052969. The next prime is 30052993. The reversal of 30052979 is 97925003.

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 30052979 - 24 = 30052963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30052969) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8522 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (4104000).

Almost surely, 230052979 is an apocalyptic number.

30052979 is a deficient number, since it is larger than the sum of its proper divisors (2779021).

30052979 is a wasteful number, since it uses less digits than its factorization.

30052979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 30052979 is about 5482.0597406449. The cubic root of 30052979 is about 310.9060519982.

The spelling of 30052979 in words is "thirty million, fifty-two thousand, nine hundred seventy-nine".

Divisors: 1 11 911 2999 10021 32989 2732089 30052979