81046296 has 96 divisors (see below), whose sum is σ = 231660000. Its totient is φ = 25546752.

The previous prime is 81046291. The next prime is 81046333. The reversal of 81046296 is 69264018.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 81046296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81046291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180280 + ... + 180728.

It is an arithmetic number, because the mean of its divisors is an integer number (2413125).

Almost surely, 2^81046296 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 81046296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115830000).

81046296 is an abundant number, since it is smaller than the sum of its proper divisors (150613704).

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

81046296 is a wasteful number, since it uses less digits than its factorization.

81046296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 81046296 is about 9002.5716325948. The cubic root of 81046296 is about 432.7572879677.

It can be divided in two parts, 8104 and 6296, that added together give a square (14400 = 120²).

The spelling of 81046296 in words is "eighty-one million, forty-six thousand, two hundred ninety-six".