81950896 has 10 divisors (see below), whose sum is σ = 158779892. Its totient is φ = 40975440.

The previous prime is 81950873. The next prime is 81950927. The reversal of 81950896 is 69805918.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560950 + ... + 2560981.

Almost surely, 2^81950896 is an apocalyptic number.

It is an amenable number.

81950896 is a deficient number, since it is larger than the sum of its proper divisors (76828996).

81950896 is a wasteful number, since it uses less digits than its factorization.

81950896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121939 (or 5121933 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 81950896 is about 9052.6734172840. The cubic root of 81950896 is about 434.3614111719.

It can be divided in two parts, 819 and 50896, that added together give a palindrome (51715).

The spelling of 81950896 in words is "eighty-one million, nine hundred fifty thousand, eight hundred ninety-six".