81367038 has 16 divisors (see below), whose sum is σ = 180815760. Its totient is φ = 27122328.

The previous prime is 81367037. The next prime is 81367043. The reversal of 81367038 is 83076318.

It is a junction number, because it is equal to n+sod(n) for n = 81366993 and 81367011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81367037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753345 + ... + 753452.

It is an arithmetic number, because the mean of its divisors is an integer number (11300985).

Almost surely, 2^81367038 is an apocalyptic number.

81367038 is an abundant number, since it is smaller than the sum of its proper divisors (99448722).

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

81367038 is a wasteful number, since it uses less digits than its factorization.

81367038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506808 (or 1506802 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 81367038 is about 9020.3679525838. The cubic root of 81367038 is about 433.3274178022.

The spelling of 81367038 in words is "eighty-one million, three hundred sixty-seven thousand, thirty-eight".