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30486797 = 1121714821
BaseRepresentation
bin111010001001…
…1000100001101
32010100220000122
41310103010031
530301034142
63005234325
7520063535
oct164230415
963326018
1030486797
1116233200
12a2629a5
136415733
1440984c5
152a231d2
hex1d1310d

30486797 has 12 divisors (see below), whose sum is σ = 35483868. Its totient is φ = 26083200.

The previous prime is 30486791. The next prime is 30486823. The reversal of 30486797 is 79768403.

It can be written as a sum of positive squares in 2 ways, for example, as 18783556 + 11703241 = 4334^2 + 3421^2 .

It is not a de Polignac number, because 30486797 - 220 = 29438221 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 (30486791) 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 11 ways as a sum of consecutive naturals, for example, 5354 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (2956989).

Almost surely, 230486797 is an apocalyptic number.

It is an amenable number.

30486797 is a deficient number, since it is larger than the sum of its proper divisors (4997071).

30486797 is a wasteful number, since it uses less digits than its factorization.

30486797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14860 (or 14849 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 30486797 is about 5521.4850357490. The cubic root of 30486797 is about 312.3948984157.

The spelling of 30486797 in words is "thirty million, four hundred eighty-six thousand, seven hundred ninety-seven".

Divisors: 1 11 17 121 187 2057 14821 163031 251957 1793341 2771527 30486797