61929424 has 20 divisors (see below), whose sum is σ = 121053636. Its totient is φ = 30689792.

The previous prime is 61929421. The next prime is 61929433. The reversal of 61929424 is 42492916.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5198400 + 56731024 = 2280^2 + 7532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61929421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15319 + ... + 18934.

Almost surely, 2^61929424 is an apocalyptic number.

It is an amenable number.

61929424 is a deficient number, since it is larger than the sum of its proper divisors (59124212).

61929424 is a wasteful number, since it uses less digits than its factorization.

61929424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34374 (or 34368 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 61929424 is about 7869.5250174328. The cubic root of 61929424 is about 395.6389253684.

The spelling of 61929424 in words is "sixty-one million, nine hundred twenty-nine thousand, four hundred twenty-four".