Search a number
-
+
30754977 = 31119181271
BaseRepresentation
bin111010101010…
…0100010100001
32010212111220020
41311110202201
530333124402
63015104053
7522261441
oct165244241
963774806
1030754977
11163a6740
12a372029
1364aa816
144128121
152a778bc
hex1d548a1

30754977 has 32 divisors (see below), whose sum is σ = 47523840. Its totient is φ = 17496000.

The previous prime is 30754931. The next prime is 30754981. The reversal of 30754977 is 77945703.

It is not a de Polignac number, because 30754977 - 27 = 30754849 is a prime.

It is a super-2 number, since 2×307549772 = 1891737220541058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30754177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113352 + ... + 113622.

It is an arithmetic number, because the mean of its divisors is an integer number (1485120).

Almost surely, 230754977 is an apocalyptic number.

It is an amenable number.

30754977 is a deficient number, since it is larger than the sum of its proper divisors (16768863).

30754977 is a wasteful number, since it uses less digits than its factorization.

30754977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 185220, while the sum is 42.

The square root of 30754977 is about 5545.7169960250. The cubic root of 30754977 is about 313.3082293403.

The spelling of 30754977 in words is "thirty million, seven hundred fifty-four thousand, nine hundred seventy-seven".

Divisors: 1 3 11 19 33 57 181 209 271 543 627 813 1991 2981 3439 5149 5973 8943 10317 15447 37829 49051 56639 113487 147153 169917 539561 931969 1618683 2795907 10251659 30754977