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30641365 = 537891861
BaseRepresentation
bin111010011100…
…0110011010101
32010122202001101
41310320303111
530321010430
63012430101
7521306266
oct164706325
963582041
1030641365
1116329347
12a318331
13646abb1
1440d896d
152a53dca
hex1d38cd5

30641365 has 16 divisors (see below), whose sum is σ = 38208240. Its totient is φ = 23569920.

The previous prime is 30641353. The next prime is 30641381. The reversal of 30641365 is 56314603.

It can be written as a sum of positive squares in 8 ways, for example, as 4334724 + 26306641 = 2082^2 + 5129^2 .

It is not a de Polignac number, because 30641365 - 25 = 30641333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15535 + ... + 17395.

It is an arithmetic number, because the mean of its divisors is an integer number (2388015).

Almost surely, 230641365 is an apocalyptic number.

It is an amenable number.

30641365 is a deficient number, since it is larger than the sum of its proper divisors (7566875).

30641365 is a wasteful number, since it uses less digits than its factorization.

30641365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 30641365 is about 5535.4642985029. The cubic root of 30641365 is about 312.9219558606.

Adding to 30641365 its reverse (56314603), we get a palindrome (86955968).

The spelling of 30641365 in words is "thirty million, six hundred forty-one thousand, three hundred sixty-five".

Divisors: 1 5 37 89 185 445 1861 3293 9305 16465 68857 165629 344285 828145 6128273 30641365