1023872 has 32 divisors (see below), whose sum is σ = 2152200. Its totient is φ = 483840.

The previous prime is 1023871. The next prime is 1023941. The reversal of 1023872 is 2783201.

It is a tau number, because it is divible by the number of its divisors (32).

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 (1023871) 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 3 ways as a sum of consecutive naturals, for example, 2222 + ... + 2642.

2^1023872 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 1023872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076100).

1023872 is an abundant number, since it is smaller than the sum of its proper divisors (1128328).

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

1023872 is an equidigital number, since it uses as much as digits as its factorization.

1023872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1023872 is about 1011.8656037241. The cubic root of 1023872 is about 100.7894840798.

The spelling of 1023872 in words is "one million, twenty-three thousand, eight hundred seventy-two".