1240628 has 12 divisors (see below), whose sum is σ = 2181060. Its totient is φ = 617472.

The previous prime is 1240621. The next prime is 1240637. The reversal of 1240628 is 8260421.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 753424 = 698^2 + 868^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240621) 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, 500 + ... + 1652.

It is an arithmetic number, because the mean of its divisors is an integer number (181755).

2^1240628 is an apocalyptic number.

It is an amenable number.

1240628 is a deficient number, since it is larger than the sum of its proper divisors (940432).

1240628 is a wasteful number, since it uses less digits than its factorization.

1240628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1240628 is about 1113.8348171969. The cubic root of 1240628 is about 107.4518406961.

The spelling of 1240628 in words is "one million, two hundred forty thousand, six hundred twenty-eight".