1361772 has 42 divisors (see below), whose sum is σ = 3580668. Its totient is φ = 452952.

The previous prime is 1361743. The next prime is 1361777. The reversal of 1361772 is 2771631.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1361777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2683 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (85254).

2^1361772 is an apocalyptic number.

1361772 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 1361772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790334).

1361772 is an abundant number, since it is smaller than the sum of its proper divisors (2218896).

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

1361772 is an equidigital number, since it uses as much as digits as its factorization.

1361772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 472 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 1361772 is about 1166.9498703886. The cubic root of 1361772 is about 110.8412632438.

It can be divided in two parts, 13617 and 72, that added together give a square (13689 = 117²).

The spelling of 1361772 in words is "one million, three hundred sixty-one thousand, seven hundred seventy-two".