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30401345 = 513467713
BaseRepresentation
bin111001111111…
…0001101000001
32010012112210202
41303332031001
530240320340
63003334545
7516256442
oct163761501
963175722
1030401345
1116184a87
12a221455
1363b5880
1440752c9
152a07c15
hex1cfe341

30401345 has 8 divisors (see below), whose sum is σ = 39287976. Its totient is φ = 22450176.

The previous prime is 30401269. The next prime is 30401351. The reversal of 30401345 is 54310403.

It can be written as a sum of positive squares in 4 ways, for example, as 3236401 + 27164944 = 1799^2 + 5212^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30401345 - 28 = 30401089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233792 + ... + 233921.

It is an arithmetic number, because the mean of its divisors is an integer number (4910997).

Almost surely, 230401345 is an apocalyptic number.

It is an amenable number.

30401345 is a deficient number, since it is larger than the sum of its proper divisors (8886631).

30401345 is a wasteful number, since it uses less digits than its factorization.

30401345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467731.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30401345 is about 5513.7414701816. The cubic root of 30401345 is about 312.1027528370.

Adding to 30401345 its reverse (54310403), we get a palindrome (84711748).

The spelling of 30401345 in words is "thirty million, four hundred one thousand, three hundred forty-five".

Divisors: 1 5 13 65 467713 2338565 6080269 30401345