81754330 has 16 divisors (see below), whose sum is σ = 168180480. Its totient is φ = 28030032.

The previous prime is 81754327. The next prime is 81754331. The reversal of 81754330 is 3345718.

It is a junction number, because it is equal to n+sod(n) for n = 81754292 and 81754301.

It is not an unprimeable number, because it can be changed into a prime (81754331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583890 + ... + 584029.

It is an arithmetic number, because the mean of its divisors is an integer number (10511280).

Almost surely, 2^81754330 is an apocalyptic number.

81754330 is an abundant number, since it is smaller than the sum of its proper divisors (86426150).

81754330 is a wasteful number, since it uses less digits than its factorization.

81754330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167933.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 81754330 is about 9041.8101063891. The cubic root of 81754330 is about 434.0138492186.

The spelling of 81754330 in words is "eighty-one million, seven hundred fifty-four thousand, three hundred thirty".