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2748890 = 25274889
BaseRepresentation
bin1010011111000111011010
312011122202202
422133013122
51200431030
6134530202
732236154
oct12370732
95148682
102748890
111608311
12b06962
13753281
14517ad4
15394745
hex29f1da

2748890 has 8 divisors (see below), whose sum is σ = 4948020. Its totient is φ = 1099552.

The previous prime is 2748859. The next prime is 2748919. The reversal of 2748890 is 988472.

It can be written as a sum of positive squares in 2 ways, for example, as 2647129 + 101761 = 1627^2 + 319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137435 + ... + 137454.

22748890 is an apocalyptic number.

2748890 is a deficient number, since it is larger than the sum of its proper divisors (2199130).

2748890 is a wasteful number, since it uses less digits than its factorization.

2748890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274896.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2748890 is about 1657.9776838064. The cubic root of 2748890 is about 140.0831139132.

The spelling of 2748890 in words is "two million, seven hundred forty-eight thousand, eight hundred ninety".

Divisors: 1 2 5 10 274889 549778 1374445 2748890