1240452636 has 24 divisors (see below), whose sum is σ = 2905077504. Its totient is φ = 411957360.

The previous prime is 1240452611. The next prime is 1240452643. The reversal of 1240452636 is 6362540421.

It is a junction number, because it is equal to n+sod(n) for n = 1240452597 and 1240452606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187470 + ... + 193973.

It is an arithmetic number, because the mean of its divisors is an integer number (121044896).

Almost surely, 2^1240452636 is an apocalyptic number.

It is an amenable number.

1240452636 is an abundant number, since it is smaller than the sum of its proper divisors (1664624868).

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

1240452636 is a wasteful number, since it uses less digits than its factorization.

1240452636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381721 (or 381719 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1240452636 is about 35220.0601362349. The cubic root of 1240452636 is about 1074.4677764936.

The spelling of 1240452636 in words is "one billion, two hundred forty million, four hundred fifty-two thousand, six hundred thirty-six".