81950296 has 32 divisors (see below), whose sum is σ = 157289040. Its totient is φ = 40014208.

The previous prime is 81950293. The next prime is 81950321. The reversal of 81950296 is 69205918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81950293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146850 + ... + 147406.

Almost surely, 2^81950296 is an apocalyptic number.

It is an amenable number.

81950296 is a deficient number, since it is larger than the sum of its proper divisors (75338744).

81950296 is a wasteful number, since it uses less digits than its factorization.

81950296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 81950296 is about 9052.6402778416. The cubic root of 81950296 is about 434.3603511165.

It can be divided in two parts, 819 and 50296, that added together give a palindrome (51115).

The spelling of 81950296 in words is "eighty-one million, nine hundred fifty thousand, two hundred ninety-six".