1486640 has 20 divisors (see below), whose sum is σ = 3456624. Its totient is φ = 594624.

The previous prime is 1486637. The next prime is 1486649. The reversal of 1486640 is 466841.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1486649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9212 + ... + 9371.

2^1486640 is an apocalyptic number.

1486640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1486640 is an abundant number, since it is smaller than the sum of its proper divisors (1969984).

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

1486640 is a wasteful number, since it uses less digits than its factorization.

1486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18596 (or 18590 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1486640 is about 1219.2784751647. The cubic root of 1486640 is about 114.1305573077.

The spelling of 1486640 in words is "one million, four hundred eighty-six thousand, six hundred forty".