1249750080 has 448 divisors, whose sum is σ = 4857292800. Its totient is φ = 301086720.

The previous prime is 1249750039. The next prime is 1249750081. The reversal of 1249750080 is 800579421.

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 (1249750081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3775515 + ... + 3775845.

Almost surely, 2^1249750080 is an apocalyptic number.

1249750080 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 1249750080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428646400).

1249750080 is an abundant number, since it is smaller than the sum of its proper divisors (3607542720).

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

1249750080 is a wasteful number, since it uses less digits than its factorization.

1249750080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1249750080 is about 35351.8044801111. The cubic root of 1249750080 is about 1077.1455487218.

The spelling of 1249750080 in words is "one billion, two hundred forty-nine million, seven hundred fifty thousand, eighty".