1540256 has 24 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 762048.

The previous prime is 1540249. The next prime is 1540289. The reversal of 1540256 is 6520451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3875 + ... + 4253.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^1540256 is an apocalyptic number.

1540256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1540256 is a deficient number, since it is larger than the sum of its proper divisors (1524064).

1540256 is a wasteful number, since it uses less digits than its factorization.

1540256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1540256 is about 1241.0705056523. The cubic root of 1540256 is about 115.4864335683.

The spelling of 1540256 in words is "one million, five hundred forty thousand, two hundred fifty-six".