1247767848 has 128 divisors (see below), whose sum is σ = 3807360000. Its totient is φ = 376871616.

The previous prime is 1247767841. The next prime is 1247767861. The reversal of 1247767848 is 8487677421.

It is a super-2 number, since 2×1247767848² = 3113849205005102208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1247767794 and 1247767803.

It is not an unprimeable number, because it can be changed into a prime (1247767841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87783 + ... + 101001.

It is an arithmetic number, because the mean of its divisors is an integer number (29745000).

Almost surely, 2^1247767848 is an apocalyptic number.

1247767848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1247767848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903680000).

1247767848 is an abundant number, since it is smaller than the sum of its proper divisors (2559592152).

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

1247767848 is a wasteful number, since it uses less digits than its factorization.

1247767848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276 (or 13266 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 54.

The square root of 1247767848 is about 35323.7575577684. The cubic root of 1247767848 is about 1076.5757595396.

The spelling of 1247767848 in words is "one billion, two hundred forty-seven million, seven hundred sixty-seven thousand, eight hundred forty-eight".