1481640 has 32 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 395072.

The previous prime is 1481611. The next prime is 1481663. The reversal of 1481640 is 461841.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1481640.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6054 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (138915).

2^1481640 is an apocalyptic number.

1481640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481640 is an abundant number, since it is smaller than the sum of its proper divisors (2963640).

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

1481640 is a wasteful number, since it uses less digits than its factorization.

1481640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361 (or 12357 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1481640 is about 1217.2263552848. The cubic root of 1481640 is about 114.0024622429.

The spelling of 1481640 in words is "one million, four hundred eighty-one thousand, six hundred forty".