305253028028 has 24 divisors (see below), whose sum is σ = 575361161088. Its totient is φ = 140867251776.

The previous prime is 305253028021. The next prime is 305253028057. The reversal of 305253028028 is 820820352503.

It is a happy number.

It is a super-3 number, since 3×305253028028³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 305253027982 and 305253028000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305253028021) 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, 7250 + ... + 781382.

It is an arithmetic number, because the mean of its divisors is an integer number (23973381712).

Almost surely, 2^305253028028 is an apocalyptic number.

It is an amenable number.

305253028028 is a deficient number, since it is larger than the sum of its proper divisors (270108133060).

305253028028 is a wasteful number, since it uses less digits than its factorization.

305253028028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781733 (or 781731 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 305253028028 in words is "three hundred five billion, two hundred fifty-three million, twenty-eight thousand, twenty-eight".