145705812 has 36 divisors (see below), whose sum is σ = 395488800. Its totient is φ = 41630064.

The previous prime is 145705811. The next prime is 145705823. The reversal of 145705812 is 218507541.

145705812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145705811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123312 + ... + 124487.

It is an arithmetic number, because the mean of its divisors is an integer number (10985800).

Almost surely, 2^145705812 is an apocalyptic number.

145705812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145705812 is an abundant number, since it is smaller than the sum of its proper divisors (249782988).

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

145705812 is a wasteful number, since it uses less digits than its factorization.

145705812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247820 (or 247811 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 145705812 is about 12070.8662489483. The cubic root of 145705812 is about 526.2098320927.

The spelling of 145705812 in words is "one hundred forty-five million, seven hundred five thousand, eight hundred twelve".