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4245831 = 33157253
BaseRepresentation
bin10000001100100101000111
321222201012000
4100030211013
52041331311
6231000343
751042342
oct20144507
97881160
104245831
11243aa57
1215090b3
13b58735
147c7459
1558d056
hex40c947

4245831 has 8 divisors (see below), whose sum is σ = 6290160. Its totient is φ = 2830536.

The previous prime is 4245827. The next prime is 4245833. The reversal of 4245831 is 1385424.

It is not a de Polignac number, because 4245831 - 22 = 4245827 is a prime.

It is a super-2 number, since 2×42458312 = 36054161761122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 157253 = 4245831 / (4 + 2 + 4 + 5 + 8 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 4245795 and 4245804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78600 + ... + 78653.

It is an arithmetic number, because the mean of its divisors is an integer number (786270).

Almost surely, 24245831 is an apocalyptic number.

4245831 is a deficient number, since it is larger than the sum of its proper divisors (2044329).

4245831 is a wasteful number, since it uses less digits than its factorization.

4245831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157262 (or 157256 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 4245831 is about 2060.5414337013. The cubic root of 4245831 is about 161.9276082592.

The spelling of 4245831 in words is "four million, two hundred forty-five thousand, eight hundred thirty-one".

Divisors: 1 3 9 27 157253 471759 1415277 4245831