1078999240 has 32 divisors (see below), whose sum is σ = 2648453760. Its totient is φ = 392363200.

The previous prime is 1078999219. The next prime is 1078999241. The reversal of 1078999240 is 429998701.

It is not an unprimeable number, because it can be changed into a prime (1078999241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225696 + ... + 1226575.

It is an arithmetic number, because the mean of its divisors is an integer number (82764180).

Almost surely, 2^1078999240 is an apocalyptic number.

1078999240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1078999240 is an abundant number, since it is smaller than the sum of its proper divisors (1569454520).

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

1078999240 is a wasteful number, since it uses less digits than its factorization.

1078999240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452293 (or 2452289 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1078999240 is about 32848.1238429229. The cubic root of 1078999240 is about 1025.6685671961.

The spelling of 1078999240 in words is "one billion, seventy-eight million, nine hundred ninety-nine thousand, two hundred forty".