1578028536 has 288 divisors, whose sum is σ = 5344269840. Its totient is φ = 417908736.

The previous prime is 1578028523. The next prime is 1578028537. The reversal of 1578028536 is 6358208751.

1578028536 is a `hidden beast` number, since 1 + 578 + 0 + 28 + 53 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1578028491 and 1578028500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1578028537) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4977850 + ... + 4978166.

Almost surely, 2^1578028536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1578028536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2672134920).

1578028536 is an abundant number, since it is smaller than the sum of its proper divisors (3766241304).

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

1578028536 is a wasteful number, since it uses less digits than its factorization.

1578028536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 1578028536 is about 39724.4073083539. The cubic root of 1578028536 is about 1164.2286545526.

The spelling of 1578028536 in words is "one billion, five hundred seventy-eight million, twenty-eight thousand, five hundred thirty-six".