61222284 has 48 divisors (see below), whose sum is σ = 161343840. Its totient is φ = 20070720.

The previous prime is 61222279. The next prime is 61222319. The reversal of 61222284 is 48222216.

It is a happy number.

61222284 is a `hidden beast` number, since 612 + 22 + 28 + 4 = 666.

61222284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 1942 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (3361330).

Almost surely, 2^61222284 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 61222284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80671920).

61222284 is an abundant number, since it is smaller than the sum of its proper divisors (100121556).

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

61222284 is a wasteful number, since it uses less digits than its factorization.

61222284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9367 (or 9359 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 61222284 is about 7824.4670106021. The cubic root of 61222284 is about 394.1272918776.

The spelling of 61222284 in words is "sixty-one million, two hundred twenty-two thousand, two hundred eighty-four".