1600020 has 48 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 426528.

The previous prime is 1599977. The next prime is 1600033. The reversal of 1600020 is 200061.

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 = 1599975 and 1600011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2^1600020 is an apocalyptic number.

1600020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1600020 is an abundant number, since it is smaller than the sum of its proper divisors (3379500).

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

1600020 is a wasteful number, since it uses less digits than its factorization.

1600020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1600020 is about 1264.9189697368. The cubic root of 1600020 is about 116.9611968628.

Adding to 1600020 its reverse (200061), we get a palindrome (1800081).

The spelling of 1600020 in words is "one million, six hundred thousand, twenty".