71346720 has 48 divisors (see below), whose sum is σ = 224743680. Its totient is φ = 19025664.

The previous prime is 71346707. The next prime is 71346721. The reversal of 71346720 is 2764317.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (71346721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73840 + ... + 74799.

It is an arithmetic number, because the mean of its divisors is an integer number (4682160).

Almost surely, 2^71346720 is an apocalyptic number.

It is an amenable number.

71346720 is an abundant number, since it is smaller than the sum of its proper divisors (153396960).

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

71346720 is a wasteful number, since it uses less digits than its factorization.

71346720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148657 (or 148649 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 71346720 is about 8446.6987634223. The cubic root of 71346720 is about 414.7547203037.

The spelling of 71346720 in words is "seventy-one million, three hundred forty-six thousand, seven hundred twenty".