1578340400 has 240 divisors, whose sum is σ = 4716864768. Its totient is φ = 494208000.

The previous prime is 1578340391. The next prime is 1578340403. The reversal of 1578340400 is 40438751.

It is not an unprimeable number, because it can be changed into a prime (1578340403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4768235 + ... + 4768565.

Almost surely, 2^1578340400 is an apocalyptic number.

1578340400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1578340400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358432384).

1578340400 is an abundant number, since it is smaller than the sum of its proper divisors (3138524368).

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

1578340400 is a wasteful number, since it uses less digits than its factorization.

1578340400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1578340400 is about 39728.3324593419. The cubic root of 1578340400 is about 1164.3053445661.

The spelling of 1578340400 in words is "one billion, five hundred seventy-eight million, three hundred forty thousand, four hundred".