1240816 has 10 divisors (see below), whose sum is σ = 2404112. Its totient is φ = 620400.

The previous prime is 1240807. The next prime is 1240817. The reversal of 1240816 is 6180421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38760 + ... + 38791.

2^1240816 is an apocalyptic number.

1240816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1240816 is a deficient number, since it is larger than the sum of its proper divisors (1163296).

1240816 is an equidigital number, since it uses as much as digits as its factorization.

1240816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77559 (or 77553 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1240816 is about 1113.9192071241. The cubic root of 1240816 is about 107.4572680349.

The spelling of 1240816 in words is "one million, two hundred forty thousand, eight hundred sixteen".