1461440 has 28 divisors (see below), whose sum is σ = 3480816. Its totient is φ = 584448.

The previous prime is 1461437. The next prime is 1461451. The reversal of 1461440 is 441641.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964 + ... + 2603.

2^1461440 is an apocalyptic number.

1461440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1461440 is an abundant number, since it is smaller than the sum of its proper divisors (2019376).

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

1461440 is an equidigital number, since it uses as much as digits as its factorization.

1461440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1461440 is about 1208.9003267433. The cubic root of 1461440 is about 113.4820040426.

The spelling of 1461440 in words is "one million, four hundred sixty-one thousand, four hundred forty".