Search a number
-
+
30972454352 = 2471619170809
BaseRepresentation
bin11100110110000110…
…100010010111010000
32221221112010200221222
4130312012202113100
51001412422014402
622121211104212
72144345342510
oct346606422720
987845120858
1030972454352
1112154163414
126004742068
132bc79a9488
1416db665840
15c141b87a2
hex7361a25d0

30972454352 has 40 divisors (see below), whose sum is σ = 68624625600. Its totient is φ = 13265632512.

The previous prime is 30972454349. The next prime is 30972454399. The reversal of 30972454352 is 25345427903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95924 + ... + 266732.

It is an arithmetic number, because the mean of its divisors is an integer number (1715615640).

Almost surely, 230972454352 is an apocalyptic number.

It is an amenable number.

30972454352 is an abundant number, since it is smaller than the sum of its proper divisors (37652171248).

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

30972454352 is a wasteful number, since it uses less digits than its factorization.

30972454352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172443 (or 172437 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 30972454352 in words is "thirty billion, nine hundred seventy-two million, four hundred fifty-four thousand, three hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 28 56 112 1619 3238 6476 11333 12952 22666 25904 45332 90664 170809 181328 341618 683236 1195663 1366472 2391326 2732944 4782652 9565304 19130608 276539771 553079542 1106159084 1935778397 2212318168 3871556794 4424636336 7743113588 15486227176 30972454352