1097772 has 48 divisors (see below), whose sum is σ = 2860032. Its totient is φ = 325440.

The previous prime is 1097743. The next prime is 1097783. The reversal of 1097772 is 2777901.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4723 + ... + 4949.

It is an arithmetic number, because the mean of its divisors is an integer number (59584).

2^1097772 is an apocalyptic number.

1097772 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 1097772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430016).

1097772 is an abundant number, since it is smaller than the sum of its proper divisors (1762260).

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

1097772 is a wasteful number, since it uses less digits than its factorization.

1097772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 33.

The square root of 1097772 is about 1047.7461524625. The cubic root of 1097772 is about 103.1582698898.

The spelling of 1097772 in words is "one million, ninety-seven thousand, seven hundred seventy-two".