1072845 has 24 divisors (see below), whose sum is σ = 1930656. Its totient is φ = 571536.

The previous prime is 1072843. The next prime is 1072849. The reversal of 1072845 is 5482701.

It is not a de Polignac number, because 1072845 - 2¹ = 1072843 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072843) 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 23 ways as a sum of consecutive naturals, for example, 774 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (80444).

2^1072845 is an apocalyptic number.

1072845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1072845 is a deficient number, since it is larger than the sum of its proper divisors (857811).

1072845 is an frugal number, since it uses more digits than its factorization.

1072845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1072845 is about 1035.7823130369. The cubic root of 1072845 is about 102.3714827919.

The spelling of 1072845 in words is "one million, seventy-two thousand, eight hundred forty-five".