1968520 has 32 divisors (see below), whose sum is σ = 4584600. Its totient is φ = 759808.

The previous prime is 1968487. The next prime is 1968521. The reversal of 1968520 is 258691.

1968520 = T₂₃₁ + T₂₃₂ + ... + T₂₈₈.

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 47524 = 1386^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (1968521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312 + ... + 2008.

2^1968520 is an apocalyptic number.

1968520 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 1968520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2292300).

1968520 is an abundant number, since it is smaller than the sum of its proper divisors (2616080).

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

1968520 is a wasteful number, since it uses less digits than its factorization.

1968520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1968520 is about 1403.0395575321. The cubic root of 1968520 is about 125.3275675130.

The spelling of 1968520 in words is "one million, nine hundred sixty-eight thousand, five hundred twenty".