1995020 has 24 divisors (see below), whose sum is σ = 4372704. Its totient is φ = 763136.

The previous prime is 1995013. The next prime is 1995023. The reversal of 1995020 is 205991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1995023) 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, 1709 + ... + 2628.

It is an arithmetic number, because the mean of its divisors is an integer number (182196).

2^1995020 is an apocalyptic number.

1995020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1995020 is an abundant number, since it is smaller than the sum of its proper divisors (2377684).

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

1995020 is a wasteful number, since it uses less digits than its factorization.

1995020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1995020 is about 1412.4517690881. The cubic root of 1995020 is about 125.8874446261.

The spelling of 1995020 in words is "one million, nine hundred ninety-five thousand, twenty".