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2828457 = 322910837
BaseRepresentation
bin1010110010100010101001
312022200220200
422302202221
51211002312
6140342413
733020142
oct12624251
95280820
102828457
111662075
12b44a09
13780558
14538ac9
153ad0dc
hex2b28a9

2828457 has 12 divisors (see below), whose sum is σ = 4226820. Its totient is φ = 1820448.

The previous prime is 2828453. The next prime is 2828461. The reversal of 2828457 is 7548282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2828453) and next prime (2828461).

It can be written as a sum of positive squares in 2 ways, for example, as 1022121 + 1806336 = 1011^2 + 1344^2 .

It is not a de Polignac number, because 2828457 - 22 = 2828453 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2828453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5158 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (352235).

22828457 is an apocalyptic number.

It is an amenable number.

2828457 is a deficient number, since it is larger than the sum of its proper divisors (1398363).

2828457 is a wasteful number, since it uses less digits than its factorization.

2828457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10872 (or 10869 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 2828457 is about 1681.8017124501. The cubic root of 2828457 is about 141.4218541565.

The spelling of 2828457 in words is "two million, eight hundred twenty-eight thousand, four hundred fifty-seven".

Divisors: 1 3 9 29 87 261 10837 32511 97533 314273 942819 2828457