1505220 has 24 divisors (see below), whose sum is σ = 4214784. Its totient is φ = 401376.

The previous prime is 1505209. The next prime is 1505227. The reversal of 1505220 is 225051.

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 1505220.

It is not an unprimeable number, because it can be changed into a prime (1505227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12484 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (175616).

2^1505220 is an apocalyptic number.

1505220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1505220 is an abundant number, since it is smaller than the sum of its proper divisors (2709564).

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

1505220 is a wasteful number, since it uses less digits than its factorization.

1505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25099 (or 25097 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1505220 is about 1226.8740766680. The cubic root of 1505220 is about 114.6040573718.

The spelling of 1505220 in words is "one million, five hundred five thousand, two hundred twenty".