71720350 has 24 divisors (see below), whose sum is σ = 143662680. Its totient is φ = 26481120.

The previous prime is 71720333. The next prime is 71720353. The reversal of 71720350 is 5302717.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71720353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54520 + ... + 55819.

It is an arithmetic number, because the mean of its divisors is an integer number (5985945).

Almost surely, 2^71720350 is an apocalyptic number.

71720350 is an abundant number, since it is smaller than the sum of its proper divisors (71942330).

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

71720350 is a wasteful number, since it uses less digits than its factorization.

71720350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110364 (or 110359 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 71720350 is about 8468.7868080381. The cubic root of 71720350 is about 415.4774588905.

The spelling of 71720350 in words is "seventy-one million, seven hundred twenty thousand, three hundred fifty".