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72488280 = 2335604069
BaseRepresentation
bin1000101001000…
…01010101011000
312001101210020010
410110201111120
5122024111110
611105401520
71540066044
oct424412530
9161353203
1072488280
1137a10577
12203392a0
1312030297
1498ad024
15656d020
hex4521558

72488280 has 32 divisors (see below), whose sum is σ = 217465200. Its totient is φ = 19330176.

The previous prime is 72488279. The next prime is 72488281. The reversal of 72488280 is 8288427.

It is an interprime number because it is at equal distance from previous prime (72488279) and next prime (72488281).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72488281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301915 + ... + 302154.

Almost surely, 272488280 is an apocalyptic number.

It is an amenable number.

72488280 is an abundant number, since it is smaller than the sum of its proper divisors (144976920).

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

72488280 is a wasteful number, since it uses less digits than its factorization.

72488280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604083 (or 604079 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 72488280 is about 8514.0049330500. The cubic root of 72488280 is about 416.9550757003.

The spelling of 72488280 in words is "seventy-two million, four hundred eighty-eight thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 604069 1208138 1812207 2416276 3020345 3624414 4832552 6040690 7248828 9061035 12081380 14497656 18122070 24162760 36244140 72488280