71240346 has 24 divisors (see below), whose sum is σ = 154938420. Its totient is φ = 23656896.

The previous prime is 71240243. The next prime is 71240347. The reversal of 71240346 is 64304217.

It can be written as a sum of positive squares in 2 ways, for example, as 69906321 + 1334025 = 8361^2 + 1155^2 .

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (71240347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2515 + ... + 12198.

Almost surely, 2^71240346 is an apocalyptic number.

71240346 is an abundant number, since it is smaller than the sum of its proper divisors (83698074).

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

71240346 is a wasteful number, since it uses less digits than its factorization.

71240346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14990 (or 14987 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 71240346 is about 8440.3996350884. The cubic root of 71240346 is about 414.5484923548.

The spelling of 71240346 in words is "seventy-one million, two hundred forty thousand, three hundred forty-six".