1078786440 has 48 divisors (see below), whose sum is σ = 3506057100. Its totient is φ = 287676288.

The previous prime is 1078786439. The next prime is 1078786447. The reversal of 1078786440 is 446878701.

It can be written as a sum of positive squares in 2 ways, for example, as 938932164 + 139854276 = 30642^2 + 11826^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1078786447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1497955 + ... + 1498674.

Almost surely, 2^1078786440 is an apocalyptic number.

1078786440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1078786440 is an abundant number, since it is smaller than the sum of its proper divisors (2427270660).

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

1078786440 is a wasteful number, since it uses less digits than its factorization.

1078786440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996646 (or 2996639 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1078786440 is about 32844.8845332116. The cubic root of 1078786440 is about 1025.6011353843.

The spelling of 1078786440 in words is "one billion, seventy-eight million, seven hundred eighty-six thousand, four hundred forty".