71481402 has 24 divisors (see below), whose sum is σ = 155032020. Its totient is φ = 23803200.

The previous prime is 71481367. The next prime is 71481419. The reversal of 71481402 is 20418417.

It can be written as a sum of positive squares in 2 ways, for example, as 71419401 + 62001 = 8451^2 + 249^2 .

It is a zygodrome in base 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33174 + ... + 35262.

Almost surely, 2^71481402 is an apocalyptic number.

71481402 is an abundant number, since it is smaller than the sum of its proper divisors (83550618).

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

71481402 is a wasteful number, since it uses less digits than its factorization.

71481402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 71481402 is about 8454.6674683278. The cubic root of 71481402 is about 415.0155352969.

Adding to 71481402 its reverse (20418417), we get a palindrome (91899819).

The spelling of 71481402 in words is "seventy-one million, four hundred eighty-one thousand, four hundred two".