1081392 has 40 divisors (see below), whose sum is σ = 3010224. Its totient is φ = 332544.

The previous prime is 1081369. The next prime is 1081403. The reversal of 1081392 is 2931801.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243 + ... + 1490.

2^1081392 is an apocalyptic number.

1081392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505112).

1081392 is an abundant number, since it is smaller than the sum of its proper divisors (1928832).

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

1081392 is a wasteful number, since it uses less digits than its factorization.

1081392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1081392 is about 1039.8999951918. The cubic root of 1081392 is about 102.6426172563.

The spelling of 1081392 in words is "one million, eighty-one thousand, three hundred ninety-two".