1463440 has 40 divisors (see below), whose sum is σ = 3714048. Its totient is φ = 531840.

The previous prime is 1463359. The next prime is 1463447. The reversal of 1463440 is 443641.

1463440 = T₁₀₅ + T₁₀₆ + ... + T₂₁₄.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1463447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49 + ... + 1711.

2^1463440 is an apocalyptic number.

1463440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1463440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857024).

1463440 is an abundant number, since it is smaller than the sum of its proper divisors (2250608).

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

1463440 is a wasteful number, since it uses less digits than its factorization.

1463440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1463440 is about 1209.7272419847. The cubic root of 1463440 is about 113.5337476545.

The spelling of 1463440 in words is "one million, four hundred sixty-three thousand, four hundred forty".