145927820 has 24 divisors (see below), whose sum is σ = 308060928. Its totient is φ = 58064000.

The previous prime is 145927787. The next prime is 145927823. The reversal of 145927820 is 28729541.

It is not an unprimeable number, because it can be changed into a prime (145927823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15281 + ... + 22920.

It is an arithmetic number, because the mean of its divisors is an integer number (12835872).

Almost surely, 2^145927820 is an apocalyptic number.

145927820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145927820 is an abundant number, since it is smaller than the sum of its proper divisors (162133108).

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

145927820 is a wasteful number, since it uses less digits than its factorization.

145927820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38401 (or 38399 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 145927820 is about 12080.0587746915. The cubic root of 145927820 is about 526.4769536937.

The spelling of 145927820 in words is "one hundred forty-five million, nine hundred twenty-seven thousand, eight hundred twenty".