Search a number
-
+
72412080 = 24351323209
BaseRepresentation
bin1000101000011…
…10101110110000
312001020220200220
410110032232300
5122014141310
611104013040
71536330636
oct424165660
9161226626
1072412080
11379692a4
1220301180
13120046b0
14988d356
156555670
hex450ebb0

72412080 has 80 divisors (see below), whose sum is σ = 241755360. Its totient is φ = 17823744.

The previous prime is 72412069. The next prime is 72412099. The reversal of 72412080 is 8021427.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 72412080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8485 + ... + 14724.

It is an arithmetic number, because the mean of its divisors is an integer number (3021942).

Almost surely, 272412080 is an apocalyptic number.

It is an amenable number.

72412080 is an abundant number, since it is smaller than the sum of its proper divisors (169343280).

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

72412080 is a wasteful number, since it uses less digits than its factorization.

72412080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23238 (or 23232 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 72412080 is about 8509.5287766127. The cubic root of 72412080 is about 416.8089228039.

The spelling of 72412080 in words is "seventy-two million, four hundred twelve thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 78 80 104 120 130 156 195 208 240 260 312 390 520 624 780 1040 1560 3120 23209 46418 69627 92836 116045 139254 185672 232090 278508 301717 348135 371344 464180 557016 603434 696270 905151 928360 1114032 1206868 1392540 1508585 1810302 1856720 2413736 2785080 3017170 3620604 4525755 4827472 5570160 6034340 7241208 9051510 12068680 14482416 18103020 24137360 36206040 72412080