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30099973 = 972271367
BaseRepresentation
bin111001011010…
…0101000000101
32002122020101211
41302310220011
530201144343
62553051421
7513563011
oct162645005
962566354
1030099973
1115a99612
12a0b6b71
13630b647
143dd7541
15299879d
hex1cb4a05

30099973 has 8 divisors (see below), whose sum is σ = 30566592. Its totient is φ = 29636736.

The previous prime is 30099967. The next prime is 30099983. The reversal of 30099973 is 37999003.

It is a happy number.

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 30099973 - 213 = 30091781 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 (30099943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21336 + ... + 22702.

It is an arithmetic number, because the mean of its divisors is an integer number (3820824).

Almost surely, 230099973 is an apocalyptic number.

It is an amenable number.

30099973 is a deficient number, since it is larger than the sum of its proper divisors (466619).

30099973 is a wasteful number, since it uses less digits than its factorization.

30099973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 30099973 is about 5486.3442290837. The cubic root of 30099973 is about 311.0680227410.

The spelling of 30099973 in words is "thirty million, ninety-nine thousand, nine hundred seventy-three".

Divisors: 1 97 227 1367 22019 132599 310309 30099973