1572420989238 has 128 divisors (see below), whose sum is σ = 3651593425920. Its totient is φ = 446811563520.

The previous prime is 1572420989221. The next prime is 1572420989261. The reversal of 1572420989238 is 8329890242751.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39425695 + ... + 39465557.

It is an arithmetic number, because the mean of its divisors is an integer number (28528073640).

Almost surely, 2^{1572420989238} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1572420989238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1825796712960).

1572420989238 is an abundant number, since it is smaller than the sum of its proper divisors (2079172436682).

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

1572420989238 is a wasteful number, since it uses less digits than its factorization.

1572420989238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40502.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 1572420989238 in words is "one trillion, five hundred seventy-two billion, four hundred twenty million, nine hundred eighty-nine thousand, two hundred thirty-eight".