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30253724 = 227563431
BaseRepresentation
bin111001101101…
…0001010011100
32002221001022022
41303122022130
530221104344
63000235312
7515103164
oct163321234
962831268
1030253724
1116094086
12a16bb38
136363617
1440375a4
1529c90ee
hex1cda29c

30253724 has 6 divisors (see below), whose sum is σ = 52944024. Its totient is φ = 15126860.

The previous prime is 30253723. The next prime is 30253733. The reversal of 30253724 is 42735203.

It is a junction number, because it is equal to n+sod(n) for n = 30253693 and 30253702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30253723) 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 as a sum of consecutive naturals, namely, 3781712 + ... + 3781719.

It is an arithmetic number, because the mean of its divisors is an integer number (8824004).

Almost surely, 230253724 is an apocalyptic number.

It is an amenable number.

30253724 is a deficient number, since it is larger than the sum of its proper divisors (22690300).

30253724 is a wasteful number, since it uses less digits than its factorization.

30253724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7563435 (or 7563433 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 30253724 is about 5500.3385350358. The cubic root of 30253724 is about 311.5967697958.

Adding to 30253724 its reverse (42735203), we get a palindrome (72988927).

The spelling of 30253724 in words is "thirty million, two hundred fifty-three thousand, seven hundred twenty-four".

Divisors: 1 2 4 7563431 15126862 30253724