1438500 has 96 divisors (see below), whose sum is σ = 4822272. Its totient is φ = 326400.

The previous prime is 1438483. The next prime is 1438501. The reversal of 1438500 is 58341.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10432 + ... + 10568.

It is an arithmetic number, because the mean of its divisors is an integer number (50232).

2^1438500 is an apocalyptic number.

1438500 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 1438500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411136).

1438500 is an abundant number, since it is smaller than the sum of its proper divisors (3383772).

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

1438500 is a wasteful number, since it uses less digits than its factorization.

1438500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1438500 is about 1199.3748371548. The cubic root of 1438500 is about 112.8851000088.

The spelling of 1438500 in words is "one million, four hundred thirty-eight thousand, five hundred".