230128079540 has 24 divisors (see below), whose sum is σ = 483447606432. Its totient is φ = 92017205280.

The previous prime is 230128079509. The next prime is 230128079563. The reversal of 230128079540 is 45970821032.

It is a super-2 number, since 2×230128079540² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2071166 + ... + 2179445.

It is an arithmetic number, because the mean of its divisors is an integer number (20143650268).

Almost surely, 2^230128079540 is an apocalyptic number.

230128079540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230128079540 is an abundant number, since it is smaller than the sum of its proper divisors (253319526892).

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

230128079540 is a wasteful number, since it uses less digits than its factorization.

230128079540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253327 (or 4253325 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 230128079540 in words is "two hundred thirty billion, one hundred twenty-eight million, seventy-nine thousand, five hundred forty".