1520860 has 48 divisors (see below), whose sum is σ = 3612672. Its totient is φ = 532800.

The previous prime is 1520851. The next prime is 1520879. The reversal of 1520860 is 680251.

It is a happy number.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6709 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (75264).

2^1520860 is an apocalyptic number.

1520860 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 1520860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806336).

1520860 is an abundant number, since it is smaller than the sum of its proper divisors (2091812).

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

1520860 is a wasteful number, since it uses less digits than its factorization.

1520860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1520860 is about 1233.2315273297. The cubic root of 1520860 is about 114.9996219269. Note that the first 3 decimals are identical.

The spelling of 1520860 in words is "one million, five hundred twenty thousand, eight hundred sixty".