1501220 has 24 divisors (see below), whose sum is σ = 3603264. Its totient is φ = 514656.

The previous prime is 1501217. The next prime is 1501223. The reversal of 1501220 is 221051.

It is an interprime number because it is at equal distance from previous prime (1501217) and next prime (1501223).

It is a super-2 number, since 2×1501220² = 4507322976800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1501223) 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, 5222 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (150136).

2^1501220 is an apocalyptic number.

1501220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501220 is an abundant number, since it is smaller than the sum of its proper divisors (2102044).

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

1501220 is a wasteful number, since it uses less digits than its factorization.

1501220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739 (or 10737 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1501220 is about 1225.2428330743. The cubic root of 1501220 is about 114.5024503204.

Adding to 1501220 its reverse (221051), we get a palindrome (1722271).

The spelling of 1501220 in words is "one million, five hundred one thousand, two hundred twenty".