Search a number
-
+
30977201 = 191630379
BaseRepresentation
bin111011000101…
…0110010110001
32011021210201202
41312022302301
530412232301
63023540545
7524205353
oct166126261
964253652
1030977201
11165386a2
12a45a755
136557a08
1441850d3
152abd66b
hex1d8acb1

30977201 has 4 divisors (see below), whose sum is σ = 32607600. Its totient is φ = 29346804.

The previous prime is 30977189. The next prime is 30977257. The reversal of 30977201 is 10277903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30977201 - 26 = 30977137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30977291) 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 in 3 ways as a sum of consecutive naturals, for example, 815171 + ... + 815208.

It is an arithmetic number, because the mean of its divisors is an integer number (8151900).

Almost surely, 230977201 is an apocalyptic number.

It is an amenable number.

30977201 is a deficient number, since it is larger than the sum of its proper divisors (1630399).

30977201 is a wasteful number, since it uses less digits than its factorization.

30977201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630398.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 30977201 is about 5565.7165756082. The cubic root of 30977201 is about 314.0610352365.

The spelling of 30977201 in words is "thirty million, nine hundred seventy-seven thousand, two hundred one".

Divisors: 1 19 1630379 30977201