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72048580 = 2257095081
BaseRepresentation
bin1000100101101…
…01111111000100
312000120110001221
410102311333010
5121421023310
611052130124
71533255112
oct422657704
9160513057
1072048580
113774018a
1220166944
1311c080c6
1497d6ab2
1564d2ada
hex44b5fc4

72048580 has 24 divisors (see below), whose sum is σ = 151545240. Its totient is φ = 28773120.

The previous prime is 72048539. The next prime is 72048611. The reversal of 72048580 is 8584027.

It can be written as a sum of positive squares in 4 ways, for example, as 544644 + 71503936 = 738^2 + 8456^2 .

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, 11640 + ... + 16720.

It is an arithmetic number, because the mean of its divisors is an integer number (6314385).

Almost surely, 272048580 is an apocalyptic number.

It is an amenable number.

72048580 is an abundant number, since it is smaller than the sum of its proper divisors (79496660).

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

72048580 is a wasteful number, since it uses less digits than its factorization.

72048580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799 (or 5797 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 72048580 is about 8488.1434954883. The cubic root of 72048580 is about 416.1103088267.

The spelling of 72048580 in words is "seventy-two million, forty-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 709 1418 2836 3545 5081 7090 10162 14180 20324 25405 50810 101620 3602429 7204858 14409716 18012145 36024290 72048580