61229424 has 80 divisors (see below), whose sum is σ = 163243520. Its totient is φ = 19768320.

The previous prime is 61229417. The next prime is 61229429. The reversal of 61229424 is 42492216.

It is a junction number, because it is equal to n+sod(n) for n = 61229391 and 61229400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61229429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253944 + ... + 254184.

It is an arithmetic number, because the mean of its divisors is an integer number (2040544).

Almost surely, 2^61229424 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 61229424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81621760).

61229424 is an abundant number, since it is smaller than the sum of its proper divisors (102014096).

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

61229424 is a wasteful number, since it uses less digits than its factorization.

61229424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 392 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 61229424 is about 7824.9232584096. The cubic root of 61229424 is about 394.1426128756.

The spelling of 61229424 in words is "sixty-one million, two hundred twenty-nine thousand, four hundred twenty-four".