81467235 has 32 divisors (see below), whose sum is σ = 149832000. Its totient is φ = 41948928.

The previous prime is 81467233. The next prime is 81467263. The reversal of 81467235 is 53276418.

It is not a de Polignac number, because 81467235 - 2¹ = 81467233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81467235.

It is not an unprimeable number, because it can be changed into a prime (81467233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6490 + ... + 14319.

It is an arithmetic number, because the mean of its divisors is an integer number (4682250).

Almost surely, 2^81467235 is an apocalyptic number.

81467235 is a deficient number, since it is larger than the sum of its proper divisors (68364765).

81467235 is a wasteful number, since it uses less digits than its factorization.

81467235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20852 (or 20846 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 81467235 is about 9025.9201746969. The cubic root of 81467235 is about 433.5052141948.

The spelling of 81467235 in words is "eighty-one million, four hundred sixty-seven thousand, two hundred thirty-five".