235920391728 has 240 divisors, whose sum is σ = 740796514560. Its totient is φ = 64387395072.

The previous prime is 235920391697. The next prime is 235920391747. The reversal of 235920391728 is 827193029532.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46465926 + ... + 46471002.

It is an arithmetic number, because the mean of its divisors is an integer number (3086652144).

Almost surely, 2^235920391728 is an apocalyptic number.

235920391728 is a gapful number since it is divisible by the number (28) 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 235920391728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370398257280).

235920391728 is an abundant number, since it is smaller than the sum of its proper divisors (504876122832).

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

235920391728 is a wasteful number, since it uses less digits than its factorization.

235920391728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984 (or 5971 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 235920391728 in words is "two hundred thirty-five billion, nine hundred twenty million, three hundred ninety-one thousand, seven hundred twenty-eight".