1016520 has 64 divisors (see below), whose sum is σ = 3136320. Its totient is φ = 263424.

The previous prime is 1016497. The next prime is 1016527. The reversal of 1016520 is 256101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1016520.

It is not an unprimeable number, because it can be changed into a prime (1016527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5062 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (49005).

2^1016520 is an apocalyptic number.

1016520 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 1016520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568160).

1016520 is an abundant number, since it is smaller than the sum of its proper divisors (2119800).

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

1016520 is a wasteful number, since it uses less digits than its factorization.

1016520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1016520 is about 1008.2261651038. The cubic root of 1016520 is about 100.5476618562.

The spelling of 1016520 in words is "one million, sixteen thousand, five hundred twenty".