1015020 has 36 divisors (see below), whose sum is σ = 3079440. Its totient is φ = 270624.

The previous prime is 1015009. The next prime is 1015039. The reversal of 1015020 is 205101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1014993 and 1015011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2640 + ... + 2999.

It is an arithmetic number, because the mean of its divisors is an integer number (85540).

2^1015020 is an apocalyptic number.

1015020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015020 is an abundant number, since it is smaller than the sum of its proper divisors (2064420).

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

1015020 is a wasteful number, since it uses less digits than its factorization.

1015020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5654 (or 5649 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 1015020 is about 1007.4820097649. The cubic root of 1015020 is about 100.4981807052.

The spelling of 1015020 in words is "one million, fifteen thousand, twenty".