1248346440 has 192 divisors, whose sum is σ = 4569177600. Its totient is φ = 292838400.

The previous prime is 1248346439. The next prime is 1248346453. The reversal of 1248346440 is 446438421.

1248346440 is a `hidden beast` number, since 1 + 2 + 4 + 8 + 3 + 4 + 644 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1248346395 and 1248346404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117676 + ... + 127844.

It is an arithmetic number, because the mean of its divisors is an integer number (23797800).

Almost surely, 2^1248346440 is an apocalyptic number.

1248346440 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 1248346440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284588800).

1248346440 is an abundant number, since it is smaller than the sum of its proper divisors (3320831160).

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

1248346440 is a wasteful number, since it uses less digits than its factorization.

1248346440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228 (or 10221 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 1248346440 is about 35331.9464507689. The cubic root of 1248346440 is about 1076.7421371416.

The spelling of 1248346440 in words is "one billion, two hundred forty-eight million, three hundred forty-six thousand, four hundred forty".