345423281028 has 24 divisors (see below), whose sum is σ = 921128749632. Its totient is φ = 98692365984.

The previous prime is 345423281023. The next prime is 345423281081. The reversal of 345423281028 is 820182324543.

It is a super-2 number, since 2×345423281028² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (345423281023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056090875 + ... + 2056091042.

It is an arithmetic number, because the mean of its divisors is an integer number (38380364568).

Almost surely, 2^345423281028 is an apocalyptic number.

It is an amenable number.

345423281028 is an abundant number, since it is smaller than the sum of its proper divisors (575705468604).

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

345423281028 is a wasteful number, since it uses less digits than its factorization.

345423281028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112181931 (or 4112181929 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 345423281028 in words is "three hundred forty-five billion, four hundred twenty-three million, two hundred eighty-one thousand, twenty-eight".