71463420 has 144 divisors (see below), whose sum is σ = 253693440. Its totient is φ = 15942528.

The previous prime is 71463419. The next prime is 71463421. The reversal of 71463420 is 2436417.

71463420 is a `hidden beast` number, since 7 + 1 + 4 + 634 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (71463419) and next prime (71463421).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71463421) 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 47 ways as a sum of consecutive naturals, for example, 53521 + ... + 54839.

It is an arithmetic number, because the mean of its divisors is an integer number (1761760).

Almost surely, 2^71463420 is an apocalyptic number.

71463420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71463420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126846720).

71463420 is an abundant number, since it is smaller than the sum of its proper divisors (182230020).

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

71463420 is a wasteful number, since it uses less digits than its factorization.

71463420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1379 counting only the distinct ones).

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

The square root of 71463420 is about 8453.6039651737. The cubic root of 71463420 is about 414.9807316742.

Adding to 71463420 its reverse (2436417), we get a palindrome (73899837).

The spelling of 71463420 in words is "seventy-one million, four hundred sixty-three thousand, four hundred twenty".