1138215 has 24 divisors (see below), whose sum is σ = 1976400. Its totient is φ = 559104.

The previous prime is 1138213. The next prime is 1138237. The reversal of 1138215 is 5128311.

It is not a de Polignac number, because 1138215 - 2¹ = 1138213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1138191 and 1138200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2311 + ... + 2759.

It is an arithmetic number, because the mean of its divisors is an integer number (82350).

2^1138215 is an apocalyptic number.

1138215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1138215 is a deficient number, since it is larger than the sum of its proper divisors (838185).

1138215 is a wasteful number, since it uses less digits than its factorization.

1138215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 470 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1138215 is about 1066.8715948979. The cubic root of 1138215 is about 104.4098411181.

It can be divided in two parts, 11 and 38215, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 1138215 in words is "one million, one hundred thirty-eight thousand, two hundred fifteen".