61224030 has 72 divisors (see below), whose sum is σ = 185184792. Its totient is φ = 13993056.

The previous prime is 61224019. The next prime is 61224043. The reversal of 61224030 is 3042216.

It is a happy number.

61224030 is a `hidden beast` number, since 612 + 24 + 0 + 30 = 666.

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 = 61223994 and 61224012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2532 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (2572011).

Almost surely, 2^61224030 is an apocalyptic number.

61224030 is an abundant number, since it is smaller than the sum of its proper divisors (123960762).

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

61224030 is a wasteful number, since it uses less digits than its factorization.

61224030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13910 (or 13900 counting only the distinct ones).

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

The square root of 61224030 is about 7824.5785829014. The cubic root of 61224030 is about 394.1310385510.

Adding to 61224030 its reverse (3042216), we get a palindrome (64266246).

It can be divided in two parts, 612 and 24030, that added together give a palindrome (24642).

The spelling of 61224030 in words is "sixty-one million, two hundred twenty-four thousand, thirty".