71463021 has 32 divisors (see below), whose sum is σ = 114182400. Its totient is φ = 39711168.

The previous prime is 71463017. The next prime is 71463031. The reversal of 71463021 is 12036417.

It is not a de Polignac number, because 71463021 - 2² = 71463017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71462982 and 71463000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71463011) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 37135 + ... + 39011.

It is an arithmetic number, because the mean of its divisors is an integer number (3568200).

Almost surely, 2^71463021 is an apocalyptic number.

It is an amenable number.

71463021 is a deficient number, since it is larger than the sum of its proper divisors (42719379).

71463021 is a wasteful number, since it uses less digits than its factorization.

71463021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 71463021 is about 8453.5803657385. The cubic root of 71463021 is about 414.9799593555.

Adding to 71463021 its reverse (12036417), we get a palindrome (83499438).

The spelling of 71463021 in words is "seventy-one million, four hundred sixty-three thousand, twenty-one".