146774728 has 8 divisors (see below), whose sum is σ = 275202630. Its totient is φ = 73387360.

The previous prime is 146774659. The next prime is 146774729. The reversal of 146774728 is 827477641.

It can be written as a sum of positive squares in only one way, i.e., 96393124 + 50381604 = 9818^2 + 7098^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (146774729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9173413 + ... + 9173428.

Almost surely, 2^146774728 is an apocalyptic number.

It is an amenable number.

146774728 is a deficient number, since it is larger than the sum of its proper divisors (128427902).

146774728 is a wasteful number, since it uses less digits than its factorization.

146774728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18346847 (or 18346843 counting only the distinct ones).

The product of its digits is 526848, while the sum is 46.

The square root of 146774728 is about 12115.0620303819. The cubic root of 146774728 is about 527.4934785025.

The spelling of 146774728 in words is "one hundred forty-six million, seven hundred seventy-four thousand, seven hundred twenty-eight".