1578880340 has 24 divisors (see below), whose sum is σ = 3330264672. Its totient is φ = 628768160.

The previous prime is 1578880339. The next prime is 1578880343. The reversal of 1578880340 is 430888751.

It is a junction number, because it is equal to n+sod(n) for n = 1578880291 and 1578880300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1578880343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169346 + ... + 178425.

It is an arithmetic number, because the mean of its divisors is an integer number (138761028).

Almost surely, 2^1578880340 is an apocalyptic number.

1578880340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1578880340 is an abundant number, since it is smaller than the sum of its proper divisors (1751384332).

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

1578880340 is a wasteful number, since it uses less digits than its factorization.

1578880340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348007 (or 348005 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 1578880340 is about 39735.1272805310. The cubic root of 1578880340 is about 1164.4380965283.

The spelling of 1578880340 in words is "one billion, five hundred seventy-eight million, eight hundred eighty thousand, three hundred forty".