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2720288 = 2585009
BaseRepresentation
bin1010011000001000100000
312010012112102
422120020200
51144022123
6134145532
732056604
oct12301040
95105472
102720288
11159887a
12ab22a8
1374324c
1450b504
1538b028
hex298220

2720288 has 12 divisors (see below), whose sum is σ = 5355630. Its totient is φ = 1360128.

The previous prime is 2720273. The next prime is 2720297. The reversal of 2720288 is 8820272.

It can be written as a sum of positive squares in only one way, i.e., 2274064 + 446224 = 1508^2 + 668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2720288.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42473 + ... + 42536.

22720288 is an apocalyptic number.

It is an amenable number.

2720288 is a deficient number, since it is larger than the sum of its proper divisors (2635342).

2720288 is an equidigital number, since it uses as much as digits as its factorization.

2720288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85019 (or 85011 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2720288 is about 1649.3295607610. The cubic root of 2720288 is about 139.5955674928.

The spelling of 2720288 in words is "two million, seven hundred twenty thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 32 85009 170018 340036 680072 1360144 2720288