81952435 has 8 divisors (see below), whose sum is σ = 98433936. Its totient is φ = 65501280.

The previous prime is 81952397. The next prime is 81952471. The reversal of 81952435 is 53425918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81952435 - 2⁹ = 81951923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81952394 and 81952403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144 + ... + 12853.

It is an arithmetic number, because the mean of its divisors is an integer number (12304242).

Almost surely, 2^81952435 is an apocalyptic number.

81952435 is a deficient number, since it is larger than the sum of its proper divisors (16481501).

81952435 is a wasteful number, since it uses less digits than its factorization.

81952435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15173.

The product of its digits is 43200, while the sum is 37.

The square root of 81952435 is about 9052.7584193990. The cubic root of 81952435 is about 434.3641301905.

The spelling of 81952435 in words is "eighty-one million, nine hundred fifty-two thousand, four hundred thirty-five".