1078667540 has 24 divisors (see below), whose sum is σ = 2290657320. Its totient is φ = 426618368.

The previous prime is 1078667539. The next prime is 1078667573. The reversal of 1078667540 is 457668701.

It can be written as a sum of positive squares in 4 ways, for example, as 187525636 + 891141904 = 13694^2 + 29852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1078667491 and 1078667500.

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, 301217 + ... + 304776.

It is an arithmetic number, because the mean of its divisors is an integer number (95444055).

Almost surely, 2^1078667540 is an apocalyptic number.

1078667540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1078667540 is an abundant number, since it is smaller than the sum of its proper divisors (1211989780).

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

1078667540 is a wasteful number, since it uses less digits than its factorization.

1078667540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606091 (or 606089 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 1078667540 is about 32843.0744602268. The cubic root of 1078667540 is about 1025.5634546315.

The spelling of 1078667540 in words is "one billion, seventy-eight million, six hundred sixty-seven thousand, five hundred forty".