1238355 has 16 divisors (see below), whose sum is σ = 2201760. Its totient is φ = 660384.

The previous prime is 1238333. The next prime is 1238371. The reversal of 1238355 is 5538321.

It is not a de Polignac number, because 1238355 - 2⁶ = 1238291 is a prime.

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

It is an Ulam number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4452 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (137610).

2^1238355 is an apocalyptic number.

1238355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1238355 is a deficient number, since it is larger than the sum of its proper divisors (963405).

1238355 is an equidigital number, since it uses as much as digits as its factorization.

1238355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187 (or 9181 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1238355 is about 1112.8140006308. The cubic root of 1238355 is about 107.3861784280.

The spelling of 1238355 in words is "one million, two hundred thirty-eight thousand, three hundred fifty-five".