Search a number
-
+
30546980 = 2251527349
BaseRepresentation
bin111010010000…
…1110000100100
32010110221120122
41310201300210
530310000410
63010421112
7520434152
oct164416044
963427518
1030546980
1116274442
12a291798
136436c49
1440b23d2
152a35e55
hex1d21c24

30546980 has 12 divisors (see below), whose sum is σ = 64148700. Its totient is φ = 12218784.

The previous prime is 30546961. The next prime is 30547007. The reversal of 30546980 is 8964503.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 17355556 = 3632^2 + 4166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30546980.

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, 763655 + ... + 763694.

It is an arithmetic number, because the mean of its divisors is an integer number (5345725).

Almost surely, 230546980 is an apocalyptic number.

It is an amenable number.

30546980 is an abundant number, since it is smaller than the sum of its proper divisors (33601720).

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

30546980 is a wasteful number, since it uses less digits than its factorization.

30546980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527358 (or 1527356 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 30546980 is about 5526.9322413071. The cubic root of 30546980 is about 312.6003261875.

The spelling of 30546980 in words is "thirty million, five hundred forty-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1527349 3054698 6109396 7636745 15273490 30546980