1247448000 has 112 divisors (see below), whose sum is σ = 4119152544. Its totient is φ = 332646400.

The previous prime is 1247447953. The next prime is 1247448011. The reversal of 1247448000 is 8447421.

It is a super-2 number, since 2×1247448000² = 3112253025408000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1989 + ... + 49988.

Almost surely, 2^1247448000 is an apocalyptic number.

1247448000 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 1247448000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059576272).

1247448000 is an abundant number, since it is smaller than the sum of its proper divisors (2871704544).

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

1247448000 is an equidigital number, since it uses as much as digits as its factorization.

1247448000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52007 (or 51987 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 1247448000 is about 35319.2298896791. The cubic root of 1247448000 is about 1076.4837632518.

The spelling of 1247448000 in words is "one billion, two hundred forty-seven million, four hundred forty-eight thousand".