1338890 has 32 divisors (see below), whose sum is σ = 2847744. Its totient is φ = 443520.

The previous prime is 1338881. The next prime is 1338907. The reversal of 1338890 is 988331.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 1862 + ... + 2478.

It is an arithmetic number, because the mean of its divisors is an integer number (88992).

2^1338890 is an apocalyptic number.

1338890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338890 is an abundant number, since it is smaller than the sum of its proper divisors (1508854).

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

1338890 is a wasteful number, since it uses less digits than its factorization.

1338890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1338890 is about 1157.1041439732. The cubic root of 1338890 is about 110.2169272957.

The spelling of 1338890 in words is "one million, three hundred thirty-eight thousand, eight hundred ninety".