1520980 has 24 divisors (see below), whose sum is σ = 3227112. Its totient is φ = 602112.

The previous prime is 1520971. The next prime is 1520983. The reversal of 1520980 is 890251.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 1507984 = 114^2 + 1228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520983) 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 7 ways as a sum of consecutive naturals, for example, 1924 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (134463).

2^1520980 is an apocalyptic number.

1520980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520980 is an abundant number, since it is smaller than the sum of its proper divisors (1706132).

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

1520980 is a wasteful number, since it uses less digits than its factorization.

1520980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1520980 is about 1233.2801790348. The cubic root of 1520980 is about 115.0026464419.

It can be divided in two parts, 1520 and 980, that added together give a square (2500 = 50²).

The spelling of 1520980 in words is "one million, five hundred twenty thousand, nine hundred eighty".