81036202 has 8 divisors (see below), whose sum is σ = 130904676. Its totient is φ = 37401312.

The previous prime is 81036187. The next prime is 81036203. The reversal of 81036202 is 20263018.

It can be written as a sum of positive squares in 2 ways, for example, as 77422401 + 3613801 = 8799^2 + 1901^2 .

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

It is not an unprimeable number, because it can be changed into a prime (81036203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558363 + ... + 1558414.

Almost surely, 2^81036202 is an apocalyptic number.

81036202 is a deficient number, since it is larger than the sum of its proper divisors (49868474).

81036202 is a wasteful number, since it uses less digits than its factorization.

81036202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116792.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 81036202 is about 9002.0109975494. The cubic root of 81036202 is about 432.7393211445.

The spelling of 81036202 in words is "eighty-one million, thirty-six thousand, two hundred two".