61302222 has 24 divisors (see below), whose sum is σ = 138597264. Its totient is φ = 19545504.

The previous prime is 61302203. The next prime is 61302233. The reversal of 61302222 is 22220316.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 61302195 and 61302204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73623 + ... + 74450.

It is an arithmetic number, because the mean of its divisors is an integer number (5774886).

Almost surely, 2^61302222 is an apocalyptic number.

61302222 is an abundant number, since it is smaller than the sum of its proper divisors (77295042).

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

61302222 is a wasteful number, since it uses less digits than its factorization.

61302222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148104 (or 148101 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 61302222 is about 7829.5735516055. The cubic root of 61302222 is about 394.2987547447.

Adding to 61302222 its reverse (22220316), we get a palindrome (83522538).

The spelling of 61302222 in words is "sixty-one million, three hundred two thousand, two hundred twenty-two".