1240763988 has 24 divisors (see below), whose sum is σ = 2897506080. Its totient is φ = 413246560.

The previous prime is 1240763971. The next prime is 1240764013. The reversal of 1240763988 is 8893670421.

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, 27318 + ... + 56813.

It is an arithmetic number, because the mean of its divisors is an integer number (120729420).

Almost surely, 2^1240763988 is an apocalyptic number.

It is an amenable number.

1240763988 is an abundant number, since it is smaller than the sum of its proper divisors (1656742092).

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

1240763988 is a wasteful number, since it uses less digits than its factorization.

1240763988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85367 (or 85365 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 1240763988 is about 35224.4799535777. The cubic root of 1240763988 is about 1074.5576656453.

The spelling of 1240763988 in words is "one billion, two hundred forty million, seven hundred sixty-three thousand, nine hundred eighty-eight".