81353262 has 16 divisors (see below), whose sum is σ = 172277712. Its totient is φ = 25522560.

The previous prime is 81353243. The next prime is 81353263. The reversal of 81353262 is 26235318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81353263) 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, 398689 + ... + 398892.

It is an arithmetic number, because the mean of its divisors is an integer number (10767357).

Almost surely, 2^81353262 is an apocalyptic number.

81353262 is an abundant number, since it is smaller than the sum of its proper divisors (90924450).

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

81353262 is a wasteful number, since it uses less digits than its factorization.

81353262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797603.

The product of its digits is 8640, while the sum is 30.

The square root of 81353262 is about 9019.6043150462. The cubic root of 81353262 is about 433.3029613164.

The spelling of 81353262 in words is "eighty-one million, three hundred fifty-three thousand, two hundred sixty-two".