1138390 has 32 divisors (see below), whose sum is σ = 2280960. Its totient is φ = 405600.

The previous prime is 1138369. The next prime is 1138391. The reversal of 1138390 is 938311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138391) 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, 8625 + ... + 8755.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2^1138390 is an apocalyptic number.

1138390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138390 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1138390 is a wasteful number, since it uses less digits than its factorization.

1138390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1138390 is about 1066.9536072389. The cubic root of 1138390 is about 104.4151918312.

The spelling of 1138390 in words is "one million, one hundred thirty-eight thousand, three hundred ninety".