1138578 has 16 divisors (see below), whose sum is σ = 2602560. Its totient is φ = 325296.

The previous prime is 1138567. The next prime is 1138589. The reversal of 1138578 is 8758311.

It is an interprime number because it is at equal distance from previous prime (1138567) and next prime (1138589).

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 7 ways as a sum of consecutive naturals, for example, 13513 + ... + 13596.

It is an arithmetic number, because the mean of its divisors is an integer number (162660).

2^1138578 is an apocalyptic number.

1138578 is an abundant number, since it is smaller than the sum of its proper divisors (1463982).

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

1138578 is a wasteful number, since it uses less digits than its factorization.

1138578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27121.

The product of its digits is 6720, while the sum is 33.

The square root of 1138578 is about 1067.0417049019. The cubic root of 1138578 is about 104.4209394150.

The spelling of 1138578 in words is "one million, one hundred thirty-eight thousand, five hundred seventy-eight".