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30873953 = 115575039
BaseRepresentation
bin111010111000…
…1100101100001
32011002120002202
41311301211201
530400431303
63021422545
7523265345
oct165614541
964076082
1030873953
1116478070
12a40aa55
13651ca16
144159625
152a9cc88
hex1d71961

30873953 has 8 divisors (see below), whose sum is σ = 33747840. Its totient is φ = 28011280.

The previous prime is 30873929. The next prime is 30873961. The reversal of 30873953 is 35937803.

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

It is not a de Polignac number, because 30873953 - 212 = 30869857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30873053) 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, 3608 + ... + 8646.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480).

Almost surely, 230873953 is an apocalyptic number.

It is an amenable number.

30873953 is a deficient number, since it is larger than the sum of its proper divisors (2873887).

30873953 is a wasteful number, since it uses less digits than its factorization.

30873953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 30873953 is about 5556.4334784104. The cubic root of 30873953 is about 313.7117217049.

The spelling of 30873953 in words is "thirty million, eight hundred seventy-three thousand, nine hundred fifty-three".

Divisors: 1 11 557 5039 6127 55429 2806723 30873953