146678728 has 64 divisors (see below), whose sum is σ = 335093760. Its totient is φ = 58825536.

The previous prime is 146678717. The next prime is 146678731. The reversal of 146678728 is 827876641.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 59325 + ... + 61747.

It is an arithmetic number, because the mean of its divisors is an integer number (5235840).

Almost surely, 2^146678728 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 146678728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167546880).

146678728 is an abundant number, since it is smaller than the sum of its proper divisors (188415032).

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

146678728 is a wasteful number, since it uses less digits than its factorization.

146678728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2502 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 146678728 is about 12111.0993720636. The cubic root of 146678728 is about 527.3784486671.

The spelling of 146678728 in words is "one hundred forty-six million, six hundred seventy-eight thousand, seven hundred twenty-eight".