Search a number
-
+
30932472 = 2331288853
BaseRepresentation
bin111010111111…
…1110111111000
32011012112101010
41311333313320
530404314342
63022553520
7523631064
oct165776770
964175333
1030932472
111650802a
12a4388a0
13654054c
144172aa4
152ab029c
hex1d7fdf8

30932472 has 16 divisors (see below), whose sum is σ = 77331240. Its totient is φ = 10310816.

The previous prime is 30932471. The next prime is 30932479. The reversal of 30932472 is 27423903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30932471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644403 + ... + 644450.

Almost surely, 230932472 is an apocalyptic number.

It is an amenable number.

30932472 is an abundant number, since it is smaller than the sum of its proper divisors (46398768).

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

30932472 is a wasteful number, since it uses less digits than its factorization.

30932472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288862 (or 1288858 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30932472 is about 5561.6968633682. The cubic root of 30932472 is about 313.9098014011.

It can be divided in two parts, 3093 and 2472, that added together give a triangular number (5565 = T105).

The spelling of 30932472 in words is "thirty million, nine hundred thirty-two thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 1288853 2577706 3866559 5155412 7733118 10310824 15466236 30932472