1438000 has 40 divisors (see below), whose sum is σ = 3481920. Its totient is φ = 574400.

The previous prime is 1437991. The next prime is 1438001. The reversal of 1438000 is 8341.

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 (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438001) 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, 1641 + ... + 2359.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2^1438000 is an apocalyptic number.

1438000 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 1438000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740960).

1438000 is an abundant number, since it is smaller than the sum of its proper divisors (2043920).

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

1438000 is an equidigital number, since it uses as much as digits as its factorization.

1438000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1438000 is about 1199.1663771137. The cubic root of 1438000 is about 112.8720194640.

The spelling of 1438000 in words is "one million, four hundred thirty-eight thousand".