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1830244 = 221361577
BaseRepresentation
bin110111110110101100100
310102222121211
412332311210
5432031434
6103121204
721361663
oct6766544
93388554
101830244
1110400a9
12743204
134c10b0
14358dda
15262464
hex1bed64

1830244 has 24 divisors (see below), whose sum is σ = 3511928. Its totient is φ = 829440.

The previous prime is 1830223. The next prime is 1830253. The reversal of 1830244 is 4420381.

It can be written as a sum of positive squares in 4 ways, for example, as 108900 + 1721344 = 330^2 + 1312^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2884 + ... + 3460.

21830244 is an apocalyptic number.

It is an amenable number.

1830244 is a deficient number, since it is larger than the sum of its proper divisors (1681684).

1830244 is a wasteful number, since it uses less digits than its factorization.

1830244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1830244 is about 1352.8651078360. The cubic root of 1830244 is about 122.3215560997.

The spelling of 1830244 in words is "one million, eight hundred thirty thousand, two hundred forty-four".

Divisors: 1 2 4 13 26 52 61 122 244 577 793 1154 1586 2308 3172 7501 15002 30004 35197 70394 140788 457561 915122 1830244