1247411880 has 512 divisors, whose sum is σ = 5029516800. Its totient is φ = 270950400.

The previous prime is 1247411861. The next prime is 1247411881. The reversal of 1247411880 is 881147421.

1247411880 is a `hidden beast` number, since 1 + 2 + 474 + 1 + 188 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1247411881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6331942 + ... + 6332138.

It is an arithmetic number, because the mean of its divisors is an integer number (9823275).

Almost surely, 2^1247411880 is an apocalyptic number.

1247411880 is a gapful number since it is divisible by the number (10) 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 1247411880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2514758400).

1247411880 is an abundant number, since it is smaller than the sum of its proper divisors (3782104920).

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

1247411880 is a wasteful number, since it uses less digits than its factorization.

1247411880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 1247411880 is about 35318.7185498002. The cubic root of 1247411880 is about 1076.4733732479.

It can be divided in two parts, 124741 and 1880, that added together give a palindrome (126621).

The spelling of 1247411880 in words is "one billion, two hundred forty-seven million, four hundred eleven thousand, eight hundred eighty".