1248399480 has 64 divisors (see below), whose sum is σ = 3770388000. Its totient is φ = 330667520.

The previous prime is 1248399469. The next prime is 1248399487. The reversal of 1248399480 is 849938421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248399487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 52790.

Almost surely, 2^1248399480 is an apocalyptic number.

1248399480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248399480 is an abundant number, since it is smaller than the sum of its proper divisors (2521988520).

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

1248399480 is a wasteful number, since it uses less digits than its factorization.

1248399480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69984 (or 69980 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1248399480 is about 35332.6970382958. The cubic root of 1248399480 is about 1076.7573865393.

The spelling of 1248399480 in words is "one billion, two hundred forty-eight million, three hundred ninety-nine thousand, four hundred eighty".