Search a number
-
+
30699265 = 56139853
BaseRepresentation
bin111010100011…
…0111100000001
32010202200110211
41311012330001
530324334030
63013554121
7521640142
oct165067401
963680424
1030699265
11163688a3
12a345941
13648b35c
144111ac9
152a6612a
hex1d46f01

30699265 has 4 divisors (see below), whose sum is σ = 36839124. Its totient is φ = 24559408.

The previous prime is 30699259. The next prime is 30699271. The reversal of 30699265 is 56299603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56299603 = 192963137.

It is an interprime number because it is at equal distance from previous prime (30699259) and next prime (30699271).

It can be written as a sum of positive squares in 2 ways, for example, as 7974976 + 22724289 = 2824^2 + 4767^2 .

It is a cyclic number.

It is not a de Polignac number, because 30699265 - 221 = 28602113 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069922 + ... + 3069931.

It is an arithmetic number, because the mean of its divisors is an integer number (9209781).

Almost surely, 230699265 is an apocalyptic number.

It is an amenable number.

30699265 is a deficient number, since it is larger than the sum of its proper divisors (6139859).

30699265 is an equidigital number, since it uses as much as digits as its factorization.

30699265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139858.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 30699265 is about 5540.6917438168. The cubic root of 30699265 is about 313.1189312147.

The spelling of 30699265 in words is "thirty million, six hundred ninety-nine thousand, two hundred sixty-five".

Divisors: 1 5 6139853 30699265