81754430 has 16 divisors (see below), whose sum is σ = 147772944. Its totient is φ = 32565120.

The previous prime is 81754429. The next prime is 81754433. The reversal of 81754430 is 3445718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81754433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14552 + ... + 19371.

It is an arithmetic number, because the mean of its divisors is an integer number (9235809).

Almost surely, 2^81754430 is an apocalyptic number.

81754430 is a deficient number, since it is larger than the sum of its proper divisors (66018514).

81754430 is a wasteful number, since it uses less digits than its factorization.

81754430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34171.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 81754430 is about 9041.8156362536. The cubic root of 81754430 is about 434.0140261771.

The spelling of 81754430 in words is "eighty-one million, seven hundred fifty-four thousand, four hundred thirty".