1540450 has 12 divisors (see below), whose sum is σ = 2865330. Its totient is φ = 616160.

The previous prime is 1540447. The next prime is 1540453. The reversal of 1540450 is 540451.

It is an interprime number because it is at equal distance from previous prime (1540447) and next prime (1540453).

It can be written as a sum of positive squares in 3 ways, for example, as 1366561 + 173889 = 1169^2 + 417^2 .

It is not an unprimeable number, because it can be changed into a prime (1540453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15355 + ... + 15454.

2^1540450 is an apocalyptic number.

1540450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540450 is a deficient number, since it is larger than the sum of its proper divisors (1324880).

1540450 is a wasteful number, since it uses less digits than its factorization.

1540450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30821 (or 30816 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1540450 is about 1241.1486615229. The cubic root of 1540450 is about 115.4912819891.

Subtracting from 1540450 its reverse (540451), we obtain a palindrome (999999).

The spelling of 1540450 in words is "one million, five hundred forty thousand, four hundred fifty".