81035384 has 16 divisors (see below), whose sum is σ = 152050920. Its totient is φ = 40488480.

The previous prime is 81035377. The next prime is 81035401. The reversal of 81035384 is 48353018.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 81035384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12167 + ... + 17609.

Almost surely, 2^81035384 is an apocalyptic number.

It is an amenable number.

81035384 is a deficient number, since it is larger than the sum of its proper divisors (71015536).

81035384 is a wasteful number, since it uses less digits than its factorization.

81035384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310 (or 7306 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 81035384 is about 9001.9655631423. The cubic root of 81035384 is about 432.7378650794.

The spelling of 81035384 in words is "eighty-one million, thirty-five thousand, three hundred eighty-four".