1438490 has 32 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 532224.

The previous prime is 1438483. The next prime is 1438501. The reversal of 1438490 is 948341.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12674 + ... + 12786.

It is an arithmetic number, because the mean of its divisors is an integer number (87210).

2^1438490 is an apocalyptic number.

1438490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438490 is a deficient number, since it is larger than the sum of its proper divisors (1352230).

1438490 is a wasteful number, since it uses less digits than its factorization.

1438490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1438490 is about 1199.3706683090. The cubic root of 1438490 is about 112.8848384276.

The spelling of 1438490 in words is "one million, four hundred thirty-eight thousand, four hundred ninety".