146686820 has 24 divisors (see below), whose sum is σ = 352048704. Its totient is φ = 50292576.

The previous prime is 146686817. The next prime is 146686853. The reversal of 146686820 is 28686641.

It is an unprimeable number.

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, 523742 + ... + 524021.

It is an arithmetic number, because the mean of its divisors is an integer number (14668696).

Almost surely, 2^146686820 is an apocalyptic number.

146686820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146686820 is an abundant number, since it is smaller than the sum of its proper divisors (205361884).

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

146686820 is a wasteful number, since it uses less digits than its factorization.

146686820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047779 (or 1047777 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 146686820 is about 12111.4334411745. The cubic root of 146686820 is about 527.3881466603.

The spelling of 146686820 in words is "one hundred forty-six million, six hundred eighty-six thousand, eight hundred twenty".