1248216340 has 24 divisors (see below), whose sum is σ = 2995719552. Its totient is φ = 427959840.

The previous prime is 1248216337. The next prime is 1248216379. The reversal of 1248216340 is 436128421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4457776 + ... + 4458055.

It is an arithmetic number, because the mean of its divisors is an integer number (124821648).

Almost surely, 2^1248216340 is an apocalyptic number.

1248216340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248216340 is an abundant number, since it is smaller than the sum of its proper divisors (1747503212).

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

1248216340 is a wasteful number, since it uses less digits than its factorization.

1248216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915847 (or 8915845 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1248216340 is about 35330.1052927953. The cubic root of 1248216340 is about 1076.7047305867.

The spelling of 1248216340 in words is "one billion, two hundred forty-eight million, two hundred sixteen thousand, three hundred forty".