6542357728 has 48 divisors (see below), whose sum is σ = 13449300480. Its totient is φ = 3126854016.

The previous prime is 6542357699. The next prime is 6542357729. The reversal of 6542357728 is 8277532456.

It is a super-2 number, since 2×6542357728² = 85604889282242643968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542357729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2123293 + ... + 2126371.

It is an arithmetic number, because the mean of its divisors is an integer number (280193760).

Almost surely, 2^6542357728 is an apocalyptic number.

It is an amenable number.

6542357728 is an abundant number, since it is smaller than the sum of its proper divisors (6906942752).

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

6542357728 is a wasteful number, since it uses less digits than its factorization.

6542357728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5999 (or 5991 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 49.

The square root of 6542357728 is about 80884.8423871865. The cubic root of 6542357728 is about 1870.3006682891.

The spelling of 6542357728 in words is "six billion, five hundred forty-two million, three hundred fifty-seven thousand, seven hundred twenty-eight".