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2897380 = 225317457
BaseRepresentation
bin1011000011010111100100
312110012110101
423003113210
51220204010
6142033444
733425113
oct13032744
95405411
102897380
1116a9932
12b78884
137a5a35
14555c7a
153c373a
hex2c35e4

2897380 has 24 divisors (see below), whose sum is σ = 6117048. Its totient is φ = 1152768.

The previous prime is 2897371. The next prime is 2897381. The reversal of 2897380 is 837982.

2897380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 181476 + 2715904 = 426^2 + 1648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6112 + ... + 6568.

It is an arithmetic number, because the mean of its divisors is an integer number (254877).

22897380 is an apocalyptic number.

2897380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2897380 is an abundant number, since it is smaller than the sum of its proper divisors (3219668).

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

2897380 is a wasteful number, since it uses less digits than its factorization.

2897380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2897380 is about 1702.1692042802. The cubic root of 2897380 is about 142.5613565674.

The spelling of 2897380 in words is "two million, eight hundred ninety-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 317 457 634 914 1268 1585 1828 2285 3170 4570 6340 9140 144869 289738 579476 724345 1448690 2897380