1620576 has 72 divisors (see below), whose sum is σ = 4894344. Its totient is φ = 506880.

The previous prime is 1620571. The next prime is 1620589. The reversal of 1620576 is 6750261.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4731 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (67977).

2^1620576 is an apocalyptic number.

1620576 is a gapful number since it is divisible by the number (16) 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 1620576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2447172).

1620576 is an abundant number, since it is smaller than the sum of its proper divisors (3273768).

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

1620576 is a wasteful number, since it uses less digits than its factorization.

1620576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1620576 is about 1273.0184601961. The cubic root of 1620576 is about 117.4599471151.

The spelling of 1620576 in words is "one million, six hundred twenty thousand, five hundred seventy-six".