1572864 has 40 divisors (see below), whose sum is σ = 4194300. Its totient is φ = 524288.

The previous prime is 1572853. The next prime is 1572869. The reversal of 1572864 is 4682751.

It is a Jordan-Polya number, since it can be written as 4! ⋅ (2!)¹⁶.

It is an ABA number since it can be written as A⋅B^A, here for A=6, B=8.

It is a super-3 number, since 3×1572864³ = 11673330234144325632, which contains 333 as substring.

Its product of digits (13440) is a multiple of the sum of its prime divisors (5).

It is a nialpdrome in base 2 and base 8.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 1572864 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524287 + 524288 + 524289.

2^1572864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1572864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2097150).

1572864 is an abundant number, since it is smaller than the sum of its proper divisors (2621436).

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

1572864 is an frugal number, since it uses more digits than its factorization.

1572864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41 (or 5 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1572864 is about 1254.1387483050. The cubic root of 1572864 is about 116.2957179413.

The spelling of 1572864 in words is "one million, five hundred seventy-two thousand, eight hundred sixty-four".