Search a number
-
+
30780327 = 310260109
BaseRepresentation
bin111010101101…
…0101110100111
32010220210200010
41311122232213
530334432302
63015421303
7522425364
oct165325647
963823603
1030780327
1116413796
12a384833
1364b9216
14413346b
152a8016c
hex1d5aba7

30780327 has 4 divisors (see below), whose sum is σ = 41040440. Its totient is φ = 20520216.

The previous prime is 30780311. The next prime is 30780329. The reversal of 30780327 is 72308703.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30780327 - 24 = 30780311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30780294 and 30780303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30780329) 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, 5130052 + ... + 5130057.

It is an arithmetic number, because the mean of its divisors is an integer number (10260110).

Almost surely, 230780327 is an apocalyptic number.

30780327 is a deficient number, since it is larger than the sum of its proper divisors (10260113).

30780327 is a wasteful number, since it uses less digits than its factorization.

30780327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260112.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 30780327 is about 5548.0020728186. The cubic root of 30780327 is about 313.3942878497.

The spelling of 30780327 in words is "thirty million, seven hundred eighty thousand, three hundred twenty-seven".

Divisors: 1 3 10260109 30780327