1338390 has 32 divisors (see below), whose sum is σ = 3569760. Its totient is φ = 356832.

The previous prime is 1338377. The next prime is 1338391. The reversal of 1338390 is 938331.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (111555).

2^1338390 is an apocalyptic number.

1338390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338390 is an abundant number, since it is smaller than the sum of its proper divisors (2231370).

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

1338390 is a wasteful number, since it uses less digits than its factorization.

1338390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973 (or 4967 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1338390 is about 1156.8880671871. Note that the first 3 decimals coincide. The cubic root of 1338390 is about 110.2032056494.

It can be divided in two parts, 1338 and 390, that added together give a cube (1728 = 12³).

The spelling of 1338390 in words is "one million, three hundred thirty-eight thousand, three hundred ninety".