Search a number
-
+
12253312240 = 2451311782031
BaseRepresentation
bin10110110100101101…
…01011010011110000
31011121221202202102021
423122112223103300
5200043321442430
65343515001224
7612435302251
oct133226532360
934557682367
1012253312240
115218747934
12245b739214
131203796a20
1484351ab28
154bab0b07a
hex2da5ab4f0

12253312240 has 40 divisors (see below), whose sum is σ = 30680411328. Its totient is φ = 4524299520.

The previous prime is 12253312229. The next prime is 12253312277. The reversal of 12253312240 is 4221335221.

It is a tau number, because it is divible by the number of its divisors (40).

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, 5889976 + ... + 5892055.

Almost surely, 212253312240 is an apocalyptic number.

12253312240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12253312240 is an abundant number, since it is smaller than the sum of its proper divisors (18427099088).

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

12253312240 is a wasteful number, since it uses less digits than its factorization.

12253312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11782057 (or 11782051 counting only the distinct ones).

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

Adding to 12253312240 its reverse (4221335221), we get a palindrome (16474647461).

The spelling of 12253312240 in words is "twelve billion, two hundred fifty-three million, three hundred twelve thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1040 11782031 23564062 47128124 58910155 94256248 117820310 153166403 188512496 235640620 306332806 471281240 612665612 765832015 942562480 1225331224 1531664030 2450662448 3063328060 6126656120 12253312240