1908720 has 120 divisors (see below), whose sum is σ = 7021872. Its totient is φ = 460800.

The previous prime is 1908713. The next prime is 1908737. The reversal of 1908720 is 278091.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7800 + ... + 8040.

2^1908720 is an apocalyptic number.

1908720 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 1908720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3510936).

1908720 is an abundant number, since it is smaller than the sum of its proper divisors (5113152).

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

1908720 is a wasteful number, since it uses less digits than its factorization.

1908720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1908720 is about 1381.5643307497. The cubic root of 1908720 is about 124.0454221385.

It can be divided in two parts, 1908 and 720, that added together give a triangular number (2628 = T₇₂).

The spelling of 1908720 in words is "one million, nine hundred eight thousand, seven hundred twenty".