81049302 has 32 divisors (see below), whose sum is σ = 190706400. Its totient is φ = 25426944.

The previous prime is 81049301. The next prime is 81049313. The reversal of 81049302 is 20394018.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81049301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43227 + ... + 45062.

It is an arithmetic number, because the mean of its divisors is an integer number (5959575).

Almost surely, 2^81049302 is an apocalyptic number.

81049302 is an abundant number, since it is smaller than the sum of its proper divisors (109657098).

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

81049302 is a wasteful number, since it uses less digits than its factorization.

81049302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88317 (or 88311 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 81049302 is about 9002.7385833423. The cubic root of 81049302 is about 432.7626382115.

The spelling of 81049302 in words is "eighty-one million, forty-nine thousand, three hundred two".