572138778 has 16 divisors (see below), whose sum is σ = 1146188736. Its totient is φ = 190394400.

The previous prime is 572138771. The next prime is 572138813. The reversal of 572138778 is 877831275.

It is not an unprimeable number, because it can be changed into a prime (572138771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75726 + ... + 82937.

It is an arithmetic number, because the mean of its divisors is an integer number (71636796).

Almost surely, 2^572138778 is an apocalyptic number.

572138778 is an abundant number, since it is smaller than the sum of its proper divisors (574049958).

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

572138778 is a wasteful number, since it uses less digits than its factorization.

572138778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159269.

The product of its digits is 658560, while the sum is 48.

The square root of 572138778 is about 23919.4226100882. The cubic root of 572138778 is about 830.1701775215.

The spelling of 572138778 in words is "five hundred seventy-two million, one hundred thirty-eight thousand, seven hundred seventy-eight".