Search a number
-
+
30400053280 = 255316129043
BaseRepresentation
bin11100010011111111…
…000000000000100000
32220110122001201022021
4130103333000000200
5444224403201110
621544322351224
72124225121642
oct342377000040
986418051267
1030400053280
1111990045a83
125a84abb514
132b36224a0c
141685624892
15bcdced2da
hex713fc0020

30400053280 has 48 divisors (see below), whose sum is σ = 74136916224. Its totient is φ = 11767760640.

The previous prime is 30400053253. The next prime is 30400053287. The reversal of 30400053280 is 8235000403.

30400053280 is a modest number, since divided by 53280 gives 30400 as remainder.

It is not an unprimeable number, because it can be changed into a prime (30400053287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3059562 + ... + 3069481.

It is an arithmetic number, because the mean of its divisors is an integer number (1544519088).

Almost surely, 230400053280 is an apocalyptic number.

It is an amenable number.

30400053280 is an abundant number, since it is smaller than the sum of its proper divisors (43736862944).

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

30400053280 is a wasteful number, since it uses less digits than its factorization.

30400053280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6129089 (or 6129081 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 30400053280 its reverse (8235000403), we get a palindrome (38635053683).

The spelling of 30400053280 in words is "thirty billion, four hundred million, fifty-three thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 31 32 40 62 80 124 155 160 248 310 496 620 992 1240 2480 4960 6129043 12258086 24516172 30645215 49032344 61290430 98064688 122580860 190000333 196129376 245161720 380000666 490323440 760001332 950001665 980646880 1520002664 1900003330 3040005328 3800006660 6080010656 7600013320 15200026640 30400053280