1543206 has 48 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 423360.

The previous prime is 1543187. The next prime is 1543207. The reversal of 1543206 is 6023451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8436 + ... + 8616.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2^1543206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1543206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867320).

1543206 is an abundant number, since it is smaller than the sum of its proper divisors (2191434).

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

1543206 is a wasteful number, since it uses less digits than its factorization.

1543206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1543206 is about 1242.2584272204. The cubic root of 1543206 is about 115.5601156293.

Adding to 1543206 its reverse (6023451), we get a palindrome (7566657).

The spelling of 1543206 in words is "one million, five hundred forty-three thousand, two hundred six".