545342028 has 96 divisors (see below), whose sum is σ = 1670000640. Its totient is φ = 134187840.

The previous prime is 545342027. The next prime is 545342059. The reversal of 545342028 is 820243545.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 545342028.

It is not an unprimeable number, because it can be changed into a prime (545342027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2025 + ... + 33087.

It is an arithmetic number, because the mean of its divisors is an integer number (17395840).

Almost surely, 2^545342028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545342028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835000320).

545342028 is an abundant number, since it is smaller than the sum of its proper divisors (1124658612).

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

545342028 is a wasteful number, since it uses less digits than its factorization.

545342028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31107 (or 31105 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 545342028 is about 23352.5593458190. The cubic root of 545342028 is about 817.0017553310.

The spelling of 545342028 in words is "five hundred forty-five million, three hundred forty-two thousand, twenty-eight".