61430424 has 128 divisors (see below), whose sum is σ = 178606080. Its totient is φ = 17424000.

The previous prime is 61430417. The next prime is 61430429. The reversal of 61430424 is 42403416.

61430424 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 (24).

It is a junction number, because it is equal to n+sod(n) for n = 61430394 and 61430403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61430429) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 406749 + ... + 406899.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^61430424 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 61430424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89303040).

61430424 is an abundant number, since it is smaller than the sum of its proper divisors (117175656).

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

61430424 is a wasteful number, since it uses less digits than its factorization.

61430424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 61430424 is about 7837.7563115984. The cubic root of 61430424 is about 394.5734304399.

The spelling of 61430424 in words is "sixty-one million, four hundred thirty thousand, four hundred twenty-four".