1139072 has 32 divisors (see below), whose sum is σ = 2478600. Its totient is φ = 517120.

The previous prime is 1139059. The next prime is 1139081. The reversal of 1139072 is 2709311.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 1812.

2^1139072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239300).

1139072 is an abundant number, since it is smaller than the sum of its proper divisors (1339528).

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

1139072 is an equidigital number, since it uses as much as digits as its factorization.

1139072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1139072 is about 1067.2731609106. The cubic root of 1139072 is about 104.4360390935.

The spelling of 1139072 in words is "one million, one hundred thirty-nine thousand, seventy-two".