61729026 has 32 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 19989120.

The previous prime is 61729021. The next prime is 61729039. The reversal of 61729026 is 62092716.

61729026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61729021) 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 15 ways as a sum of consecutive naturals, for example, 85495 + ... + 86213.

It is an arithmetic number, because the mean of its divisors is an integer number (3969000).

Almost surely, 2^61729026 is an apocalyptic number.

61729026 is an abundant number, since it is smaller than the sum of its proper divisors (65278974).

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

61729026 is a wasteful number, since it uses less digits than its factorization.

61729026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 61729026 is about 7856.7821657470. The cubic root of 61729026 is about 395.2117136690.

The spelling of 61729026 in words is "sixty-one million, seven hundred twenty-nine thousand, twenty-six".