1248950640 has 80 divisors (see below), whose sum is σ = 4424859648. Its totient is φ = 285474048.

The previous prime is 1248950581. The next prime is 1248950641. The reversal of 1248950640 is 460598421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248950641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370032 + ... + 373391.

Almost surely, 2^1248950640 is an apocalyptic number.

1248950640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248950640 is an abundant number, since it is smaller than the sum of its proper divisors (3175909008).

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

1248950640 is a wasteful number, since it uses less digits than its factorization.

1248950640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743446 (or 743440 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1248950640 is about 35340.4957520406. The cubic root of 1248950640 is about 1076.9158236142.

The spelling of 1248950640 in words is "one billion, two hundred forty-eight million, nine hundred fifty thousand, six hundred forty".