1779120 has 120 divisors (see below), whose sum is σ = 6847776. Its totient is φ = 405504.

The previous prime is 1779109. The next prime is 1779131. The reversal of 1779120 is 219771.

It is an interprime number because it is at equal distance from previous prime (1779109) and next prime (1779131).

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4864 + ... + 5216.

2^1779120 is an apocalyptic number.

1779120 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 1779120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3423888).

1779120 is an abundant number, since it is smaller than the sum of its proper divisors (5068656).

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

1779120 is a wasteful number, since it uses less digits than its factorization.

1779120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 1779120 is about 1333.8365716983. The cubic root of 1779120 is about 121.1718524316.

The spelling of 1779120 in words is "one million, seven hundred seventy-nine thousand, one hundred twenty".