1450640 has 20 divisors (see below), whose sum is σ = 3372924. Its totient is φ = 580224.

The previous prime is 1450639. The next prime is 1450651. The reversal of 1450640 is 460541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 891136 = 748^2 + 944^2 .

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

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8987 + ... + 9146.

2^1450640 is an apocalyptic number.

1450640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1450640 is an abundant number, since it is smaller than the sum of its proper divisors (1922284).

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

1450640 is a wasteful number, since it uses less digits than its factorization.

1450640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18146 (or 18140 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1450640 is about 1204.4251740976. The cubic root of 1450640 is about 113.2017696702.

Subtracting from 1450640 its reverse (460541), we obtain a palindrome (990099).

The spelling of 1450640 in words is "one million, four hundred fifty thousand, six hundred forty".