1623020 has 24 divisors (see below), whose sum is σ = 3895584. Its totient is φ = 556416.

The previous prime is 1622987. The next prime is 1623023. The reversal of 1623020 is 203261.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1622986 and 1623004.

It is not an unprimeable number, because it can be changed into a prime (1623023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5657 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (162316).

2^1623020 is an apocalyptic number.

1623020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623020 is an abundant number, since it is smaller than the sum of its proper divisors (2272564).

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

1623020 is a wasteful number, since it uses less digits than its factorization.

1623020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11609 (or 11607 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1623020 is about 1273.9780217884. The cubic root of 1623020 is about 117.5189647976.

Adding to 1623020 its reverse (203261), we get a palindrome (1826281).

The spelling of 1623020 in words is "one million, six hundred twenty-three thousand, twenty".