61289228 has 48 divisors (see below), whose sum is σ = 144017664. Its totient is φ = 22040640.

The previous prime is 61289203. The next prime is 61289237. The reversal of 61289228 is 82298216.

61289228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61289191 and 61289200.

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, 3650 + ... + 11657.

It is an arithmetic number, because the mean of its divisors is an integer number (3000368).

Almost surely, 2^61289228 is an apocalyptic number.

It is an amenable number.

61289228 is an abundant number, since it is smaller than the sum of its proper divisors (82728436).

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

61289228 is a wasteful number, since it uses less digits than its factorization.

61289228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15342 (or 15340 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 61289228 is about 7828.7437050909. The cubic root of 61289228 is about 394.2708934378.

The spelling of 61289228 in words is "sixty-one million, two hundred eighty-nine thousand, two hundred twenty-eight".