1015220 has 24 divisors (see below), whose sum is σ = 2225664. Its totient is φ = 388256.

The previous prime is 1015207. The next prime is 1015277. The reversal of 1015220 is 225101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (92736).

2^1015220 is an apocalyptic number.

1015220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015220 is an abundant number, since it is smaller than the sum of its proper divisors (1210444).

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

1015220 is a wasteful number, since it uses less digits than its factorization.

1015220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2237 counting only the distinct ones).

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

The square root of 1015220 is about 1007.5812622315. The cubic root of 1015220 is about 100.5047810073.

The spelling of 1015220 in words is "one million, fifteen thousand, two hundred twenty".