1481840 has 20 divisors (see below), whose sum is σ = 3445464. Its totient is φ = 592704.

The previous prime is 1481819. The next prime is 1481849. The reversal of 1481840 is 481841.

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

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9182 + ... + 9341.

2^1481840 is an apocalyptic number.

1481840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481840 is an abundant number, since it is smaller than the sum of its proper divisors (1963624).

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

1481840 is a wasteful number, since it uses less digits than its factorization.

1481840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18536 (or 18530 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 1481840 is about 1217.3085065011. The cubic root of 1481840 is about 114.0075915741.

Subtracting from 1481840 its reverse (481841), we obtain a palindrome (999999).

The spelling of 1481840 in words is "one million, four hundred eighty-one thousand, eight hundred forty".