1772340 has 48 divisors (see below), whose sum is σ = 5026560. Its totient is φ = 466560.

The previous prime is 1772333. The next prime is 1772341. The reversal of 1772340 is 432771.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1772340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6405 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (104720).

2^1772340 is an apocalyptic number.

1772340 is a gapful number since it is divisible by the number (10) 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 1772340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2513280).

1772340 is an abundant number, since it is smaller than the sum of its proper divisors (3254220).

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

1772340 is a wasteful number, since it uses less digits than its factorization.

1772340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 1772340 is about 1331.2926049520. The cubic root of 1772340 is about 121.0177329838.

It can be divided in two parts, 1772 and 340, that added together give a palindrome (2112).

The spelling of 1772340 in words is "one million, seven hundred seventy-two thousand, three hundred forty".