61297228 has 24 divisors (see below), whose sum is σ = 109358144. Its totient is φ = 30056400.

The previous prime is 61297217. The next prime is 61297241. The reversal of 61297228 is 82279216.

61297228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 88363 + ... + 89053.

Almost surely, 2^61297228 is an apocalyptic number.

It is an amenable number.

61297228 is a deficient number, since it is larger than the sum of its proper divisors (48060916).

61297228 is a wasteful number, since it uses less digits than its factorization.

61297228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1091 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 61297228 is about 7829.2546260803. The cubic root of 61297228 is about 394.2880472402.

The spelling of 61297228 in words is "sixty-one million, two hundred ninety-seven thousand, two hundred twenty-eight".