Search a number
-
+
30885474 = 2319332663
BaseRepresentation
bin111010111010…
…0011001100010
32011010010220110
41311310121202
530401313344
63021552150
7523344054
oct165643142
964103813
1030885474
1116485794
12a415656
136525039
14415d8d4
152aa13b9
hex1d74662

30885474 has 16 divisors (see below), whose sum is σ = 61826112. Its totient is φ = 10285968.

The previous prime is 30885473. The next prime is 30885487. The reversal of 30885474 is 47458803.

It is not an unprimeable number, because it can be changed into a prime (30885473) 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 7 ways as a sum of consecutive naturals, for example, 10267 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (3864132).

Almost surely, 230885474 is an apocalyptic number.

30885474 is an abundant number, since it is smaller than the sum of its proper divisors (30940638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30885474 is a wasteful number, since it uses less digits than its factorization.

30885474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 30885474 is about 5557.4701078818. The cubic root of 30885474 is about 313.7507386638.

The spelling of 30885474 in words is "thirty million, eight hundred eighty-five thousand, four hundred seventy-four".

Divisors: 1 2 3 6 1933 2663 3866 5326 5799 7989 11598 15978 5147579 10295158 15442737 30885474