81754932 has 72 divisors (see below), whose sum is σ = 223529376. Its totient is φ = 23188032.

The previous prime is 81754913. The next prime is 81754951. The reversal of 81754932 is 23945718.

It is an interprime number because it is at equal distance from previous prime (81754913) and next prime (81754951).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 95418 + ... + 96270.

Almost surely, 2^81754932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81754932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111764688).

81754932 is an abundant number, since it is smaller than the sum of its proper divisors (141774444).

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

81754932 is a wasteful number, since it uses less digits than its factorization.

81754932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1028 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 81754932 is about 9041.8433961223. The cubic root of 81754932 is about 434.0149145065.

The spelling of 81754932 in words is "eighty-one million, seven hundred fifty-four thousand, nine hundred thirty-two".