Search a number
-
+
30545424 = 2434721337
BaseRepresentation
bin111010010000…
…1011000010000
32010110212110000
41310201120100
530304423144
63010410000
7520426500
oct164413020
963425400
1030545424
1116273258
12a290900
136436320
1440b1a00
152a35769
hex1d21610

30545424 has 300 divisors, whose sum is σ = 113745324. Its totient is φ = 7838208.

The previous prime is 30545419. The next prime is 30545453. The reversal of 30545424 is 42454503.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 14288400 = 4032^2 + 3780^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 825534 + ... + 825570.

Almost surely, 230545424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30545424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56872662).

30545424 is an abundant number, since it is smaller than the sum of its proper divisors (83199900).

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

30545424 is a wasteful number, since it uses less digits than its factorization.

30545424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 30545424 is about 5526.7914742642. The cubic root of 30545424 is about 312.5950183592.

Adding to 30545424 its reverse (42454503), we get a palindrome (72999927).

The spelling of 30545424 in words is "thirty million, five hundred forty-five thousand, four hundred twenty-four".