Search a number
-
+
30148947460 = 2251507447373
BaseRepresentation
bin11100000101000001…
…000110111000000100
32212211010120012212201
4130011001012320010
5443221112304320
621503352324244
72115055553002
oct340501067004
985733505781
1030148947460
1111871327505
125a149a3684
132ac61b5ba8
14166013ba72
15bb6c4b70a
hex705046e04

30148947460 has 12 divisors (see below), whose sum is σ = 63312789708. Its totient is φ = 12059578976.

The previous prime is 30148947443. The next prime is 30148947467. The reversal of 30148947460 is 6474984103.

It can be written as a sum of positive squares in 2 ways, for example, as 4441955904 + 25706991556 = 66648^2 + 160334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30148947460.

It is not an unprimeable number, because it can be changed into a prime (30148947467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753723667 + ... + 753723706.

It is an arithmetic number, because the mean of its divisors is an integer number (5276065809).

Almost surely, 230148947460 is an apocalyptic number.

It is an amenable number.

30148947460 is an abundant number, since it is smaller than the sum of its proper divisors (33163842248).

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

30148947460 is a wasteful number, since it uses less digits than its factorization.

30148947460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507447382 (or 1507447380 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 30148947460 in words is "thirty billion, one hundred forty-eight million, nine hundred forty-seven thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1507447373 3014894746 6029789492 7537236865 15074473730 30148947460