81414382 has 24 divisors (see below), whose sum is σ = 144399240. Its totient is φ = 34317360.

The previous prime is 81414349. The next prime is 81414407. The reversal of 81414382 is 28341418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 832 + ... + 12787.

It is an arithmetic number, because the mean of its divisors is an integer number (6016635).

Almost surely, 2^81414382 is an apocalyptic number.

81414382 is a deficient number, since it is larger than the sum of its proper divisors (62984858).

81414382 is a wasteful number, since it uses less digits than its factorization.

81414382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13696 (or 13689 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 81414382 is about 9022.9918541468. The cubic root of 81414382 is about 433.4114464049.

It can be divided in two parts, 81414 and 382, that added together give a square (81796 = 286²).

The spelling of 81414382 in words is "eighty-one million, four hundred fourteen thousand, three hundred eighty-two".