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2790489 = 31371551
BaseRepresentation
bin1010101001010001011001
312020202211110
422221101121
51203243424
6135450533
732501352
oct12512131
95222743
102790489
111636599
12b26a49
137691a0
14528d29
153a1c29
hex2a9459

2790489 has 8 divisors (see below), whose sum is σ = 4006912. Its totient is φ = 1717200.

The previous prime is 2790481. The next prime is 2790497. The reversal of 2790489 is 9840972.

It is an interprime number because it is at equal distance from previous prime (2790481) and next prime (2790497).

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

It is not a de Polignac number, because 2790489 - 23 = 2790481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 71551 = 2790489 / (2 + 7 + 9 + 0 + 4 + 8 + 9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2790481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35737 + ... + 35814.

It is an arithmetic number, because the mean of its divisors is an integer number (500864).

22790489 is an apocalyptic number.

It is an amenable number.

2790489 is a deficient number, since it is larger than the sum of its proper divisors (1216423).

2790489 is a wasteful number, since it uses less digits than its factorization.

2790489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71567.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2790489 is about 1670.4756807568. The cubic root of 2790489 is about 140.7862058467.

The spelling of 2790489 in words is "two million, seven hundred ninety thousand, four hundred eighty-nine".

Divisors: 1 3 13 39 71551 214653 930163 2790489