81950796 has 18 divisors (see below), whose sum is σ = 207153492. Its totient is φ = 27316920.

The previous prime is 81950783. The next prime is 81950801. The reversal of 81950796 is 69705918.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1138170 + ... + 1138241.

Almost surely, 2^81950796 is an apocalyptic number.

It is an amenable number.

81950796 is an abundant number, since it is smaller than the sum of its proper divisors (125202696).

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

81950796 is a wasteful number, since it uses less digits than its factorization.

81950796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276421 (or 2276416 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 81950796 is about 9052.6678940520. The cubic root of 81950796 is about 434.3612344964.

It can be divided in two parts, 819 and 50796, that added together give a palindrome (51615).

The spelling of 81950796 in words is "eighty-one million, nine hundred fifty thousand, seven hundred ninety-six".