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30846157 = 31819697
BaseRepresentation
bin111010110101…
…0110011001101
32011001010222021
41311222303031
530344034112
63021050141
7523121326
oct165526315
964033867
1030846157
11164591a1
12a3b6951
136510184
14414d44d
152a94907
hex1d6accd

30846157 has 4 divisors (see below), whose sum is σ = 30859036. Its totient is φ = 30833280.

The previous prime is 30846119. The next prime is 30846173. The reversal of 30846157 is 75164803.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3031081 + 27815076 = 1741^2 + 5274^2 .

It is a cyclic number.

It is not a de Polignac number, because 30846157 - 215 = 30813389 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 (30846757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668 + ... + 8029.

It is an arithmetic number, because the mean of its divisors is an integer number (7714759).

Almost surely, 230846157 is an apocalyptic number.

It is an amenable number.

30846157 is a deficient number, since it is larger than the sum of its proper divisors (12879).

30846157 is an equidigital number, since it uses as much as digits as its factorization.

30846157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12878.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30846157 is about 5553.9316704475. The cubic root of 30846157 is about 313.6175479397.

The spelling of 30846157 in words is "thirty million, eight hundred forty-six thousand, one hundred fifty-seven".

Divisors: 1 3181 9697 30846157