61011728 has 10 divisors (see below), whose sum is σ = 118210254. Its totient is φ = 30505856.

The previous prime is 61011697. The next prime is 61011733. The reversal of 61011728 is 82711016.

61011728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 58553104 + 2458624 = 7652^2 + 1568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61011697 and 61011706.

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 as a sum of consecutive naturals, namely, 1906601 + ... + 1906632.

Almost surely, 2^61011728 is an apocalyptic number.

It is an amenable number.

61011728 is a deficient number, since it is larger than the sum of its proper divisors (57198526).

61011728 is a wasteful number, since it uses less digits than its factorization.

61011728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813241 (or 3813235 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 61011728 is about 7811.0004480860. Note that the first 3 decimals coincide. The cubic root of 61011728 is about 393.6749446930.

The spelling of 61011728 in words is "sixty-one million, eleven thousand, seven hundred twenty-eight".