1243680048 has 80 divisors (see below), whose sum is σ = 3844441440. Its totient is φ = 382669056.

The previous prime is 1243680047. The next prime is 1243680059. The reversal of 1243680048 is 8400863421.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1243679994 and 1243680021.

It is not an unprimeable number, because it can be changed into a prime (1243680047) 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, 105111 + ... + 116342.

It is an arithmetic number, because the mean of its divisors is an integer number (48055518).

Almost surely, 2^1243680048 is an apocalyptic number.

1243680048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1243680048 is an abundant number, since it is smaller than the sum of its proper divisors (2600761392).

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

1243680048 is a wasteful number, since it uses less digits than its factorization.

1243680048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221483 (or 221471 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1243680048 is about 35265.8481820585. The cubic root of 1243680048 is about 1075.3988202562.

The spelling of 1243680048 in words is "one billion, two hundred forty-three million, six hundred eighty thousand, forty-eight".