81734052 has 24 divisors (see below), whose sum is σ = 190868832. Its totient is φ = 27222400.

The previous prime is 81734041. The next prime is 81734053. The reversal of 81734052 is 25043718.

It is not an unprimeable number, because it can be changed into a prime (81734053) 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, 19852 + ... + 23612.

It is an arithmetic number, because the mean of its divisors is an integer number (7952868).

Almost surely, 2^81734052 is an apocalyptic number.

It is an amenable number.

81734052 is an abundant number, since it is smaller than the sum of its proper divisors (109134780).

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

81734052 is a wasteful number, since it uses less digits than its factorization.

81734052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 5577 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 81734052 is about 9040.6886905810. The cubic root of 81734052 is about 433.9779625951.

The spelling of 81734052 in words is "eighty-one million, seven hundred thirty-four thousand, fifty-two".