1248784 has 10 divisors (see below), whose sum is σ = 2419550. Its totient is φ = 624384.

The previous prime is 1248781. The next prime is 1248799. The reversal of 1248784 is 4878421.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 327184 = 960^2 + 572^2 .

It is a super-2 number, since 2×1248784² = 3118922957312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1248781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39009 + ... + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (241955).

2^1248784 is an apocalyptic number.

It is an amenable number.

1248784 is a deficient number, since it is larger than the sum of its proper divisors (1170766).

1248784 is an equidigital number, since it uses as much as digits as its factorization.

1248784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78057 (or 78051 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 1248784 is about 1117.4900446984. The cubic root of 1248784 is about 107.6867926009.

The spelling of 1248784 in words is "one million, two hundred forty-eight thousand, seven hundred eighty-four".