1252548720 has 240 divisors, whose sum is σ = 4493998080. Its totient is φ = 311883264.

The previous prime is 1252548643. The next prime is 1252548733. The reversal of 1252548720 is 278452521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711201 + ... + 712959.

It is an arithmetic number, because the mean of its divisors is an integer number (18724992).

Almost surely, 2^1252548720 is an apocalyptic number.

1252548720 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 1252548720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246999040).

1252548720 is an abundant number, since it is smaller than the sum of its proper divisors (3241449360).

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

1252548720 is a wasteful number, since it uses less digits than its factorization.

1252548720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 1252548720 is about 35391.3650485539. The cubic root of 1252548720 is about 1077.9489880779.

The spelling of 1252548720 in words is "one billion, two hundred fifty-two million, five hundred forty-eight thousand, seven hundred twenty".