1087772 has 24 divisors (see below), whose sum is σ = 2219616. Its totient is φ = 456768.

The previous prime is 1087753. The next prime is 1087781. The reversal of 1087772 is 2777801.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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, 1118 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (92484).

2^1087772 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 1087772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109808).

1087772 is an abundant number, since it is smaller than the sum of its proper divisors (1131844).

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

1087772 is a wasteful number, since it uses less digits than its factorization.

1087772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 1087772 is about 1042.9630865951. The cubic root of 1087772 is about 102.8440786611.

The spelling of 1087772 in words is "one million, eighty-seven thousand, seven hundred seventy-two".