1672020 has 72 divisors (see below), whose sum is σ = 5800704. Its totient is φ = 381888.

The previous prime is 1672009. The next prime is 1672037. The reversal of 1672020 is 202761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1671984 and 1672002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597 + ... + 1923.

2^1672020 is an apocalyptic number.

1672020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1672020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2900352).

1672020 is an abundant number, since it is smaller than the sum of its proper divisors (4128684).

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

1672020 is a wasteful number, since it uses less digits than its factorization.

1672020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1672020 is about 1293.0661235993. The cubic root of 1672020 is about 118.6899160495.

Adding to 1672020 its reverse (202761), we get a palindrome (1874781).

It can be divided in two parts, 167 and 2020, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1672020 in words is "one million, six hundred seventy-two thousand, twenty".