81092652 has 48 divisors (see below), whose sum is σ = 206825472. Its totient is φ = 24618240.

The previous prime is 81092651. The next prime is 81092653. The reversal of 81092652 is 25629018.

It is an interprime number because it is at equal distance from previous prime (81092651) and next prime (81092653).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (81092651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88 + ... + 12735.

It is an arithmetic number, because the mean of its divisors is an integer number (4308864).

Almost surely, 2^81092652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81092652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103412736).

81092652 is an abundant number, since it is smaller than the sum of its proper divisors (125732820).

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

81092652 is a wasteful number, since it uses less digits than its factorization.

81092652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12878 (or 12876 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 81092652 is about 9005.1458622279. The cubic root of 81092652 is about 432.8397802152.

The spelling of 81092652 in words is "eighty-one million, ninety-two thousand, six hundred fifty-two".