71774430 has 128 divisors (see below), whose sum is σ = 215986176. Its totient is φ = 14860800.

The previous prime is 71774401. The next prime is 71774441. The reversal of 71774430 is 3447717.

It is a junction number, because it is equal to n+sod(n) for n = 71774391 and 71774400.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 166315 + ... + 166745.

It is an arithmetic number, because the mean of its divisors is an integer number (1687392).

Almost surely, 2^71774430 is an apocalyptic number.

71774430 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71774430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107993088).

71774430 is an abundant number, since it is smaller than the sum of its proper divisors (144211746).

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

71774430 is a wasteful number, since it uses less digits than its factorization.

71774430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 71774430 is about 8471.9791076230. The cubic root of 71774430 is about 415.5818615035.

The spelling of 71774430 in words is "seventy-one million, seven hundred seventy-four thousand, four hundred thirty".