1249610880 has 256 divisors, whose sum is σ = 4599302400. Its totient is φ = 282673152.

The previous prime is 1249610849. The next prime is 1249610881. The reversal of 1249610880 is 880169421.

It is not an unprimeable number, because it can be changed into a prime (1249610881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1464534 + ... + 1465386.

It is an arithmetic number, because the mean of its divisors is an integer number (17966025).

Almost surely, 2^1249610880 is an apocalyptic number.

1249610880 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 1249610880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2299651200).

1249610880 is an abundant number, since it is smaller than the sum of its proper divisors (3349691520).

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

1249610880 is a wasteful number, since it uses less digits than its factorization.

1249610880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1249610880 is about 35349.8356431823. The cubic root of 1249610880 is about 1077.1055555984.

The spelling of 1249610880 in words is "one billion, two hundred forty-nine million, six hundred ten thousand, eight hundred eighty".