1540266 has 72 divisors (see below), whose sum is σ = 4005504. Its totient is φ = 393120.

The previous prime is 1540249. The next prime is 1540289. The reversal of 1540266 is 6620451.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49671 + ... + 49701.

It is an arithmetic number, because the mean of its divisors is an integer number (55632).

2^1540266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002752).

1540266 is an abundant number, since it is smaller than the sum of its proper divisors (2465238).

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

1540266 is a wasteful number, since it uses less digits than its factorization.

1540266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1540266 is about 1241.0745344257. The cubic root of 1540266 is about 115.4866834969.

The spelling of 1540266 in words is "one million, five hundred forty thousand, two hundred sixty-six".