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2470289 = 12371997
BaseRepresentation
bin1001011011000110010001
311122111121012
421123012101
51113022124
6124540305
726666003
oct11330621
94574535
102470289
111437a68
129b1695
13686513
14484373
1533be0e
hex25b191

2470289 has 4 divisors (see below), whose sum is σ = 2473524. Its totient is φ = 2467056.

The previous prime is 2470261. The next prime is 2470301. The reversal of 2470289 is 9820742.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9820742 = 24910371.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 1669264 = 895^2 + 1292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2470289 is a prime.

It is a super-2 number, since 2×24702892 = 12204655487042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2470229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 2235.

It is an arithmetic number, because the mean of its divisors is an integer number (618381).

22470289 is an apocalyptic number.

It is an amenable number.

2470289 is a deficient number, since it is larger than the sum of its proper divisors (3235).

2470289 is a wasteful number, since it uses less digits than its factorization.

2470289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2470289 is about 1571.7153050091. The cubic root of 2470289 is about 135.1810830121.

The spelling of 2470289 in words is "two million, four hundred seventy thousand, two hundred eighty-nine".

Divisors: 1 1237 1997 2470289