1825440 has 48 divisors (see below), whose sum is σ = 5751648. Its totient is φ = 486656.

The previous prime is 1825429. The next prime is 1825451. The reversal of 1825440 is 445281.

It is an interprime number because it is at equal distance from previous prime (1825429) and next prime (1825451).

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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 1825440.

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, 1422 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (119826).

2^1825440 is an apocalyptic number.

1825440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1825440 is an abundant number, since it is smaller than the sum of its proper divisors (3926208).

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

1825440 is a wasteful number, since it uses less digits than its factorization.

1825440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821 (or 3813 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1825440 is about 1351.0884501024. The cubic root of 1825440 is about 122.2144396636.

The spelling of 1825440 in words is "one million, eight hundred twenty-five thousand, four hundred forty".