145778028 has 24 divisors (see below), whose sum is σ = 371071680. Its totient is φ = 44175120.

The previous prime is 145777991. The next prime is 145778033. The reversal of 145778028 is 820877541.

145778028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 552058 + ... + 552321.

It is an arithmetic number, because the mean of its divisors is an integer number (15461320).

Almost surely, 2^145778028 is an apocalyptic number.

It is an amenable number.

145778028 is an abundant number, since it is smaller than the sum of its proper divisors (225293652).

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

145778028 is a wasteful number, since it uses less digits than its factorization.

145778028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104397 (or 1104395 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 145778028 is about 12073.8572130036. The cubic root of 145778028 is about 526.2967526539.

The spelling of 145778028 in words is "one hundred forty-five million, seven hundred seventy-eight thousand, twenty-eight".