71924080 has 20 divisors (see below), whose sum is σ = 167223672. Its totient is φ = 28769600.

The previous prime is 71924033. The next prime is 71924087. The reversal of 71924080 is 8042917.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71924087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449446 + ... + 449605.

Almost surely, 2^71924080 is an apocalyptic number.

It is an amenable number.

71924080 is an abundant number, since it is smaller than the sum of its proper divisors (95299592).

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

71924080 is a wasteful number, since it uses less digits than its factorization.

71924080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899064 (or 899058 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 71924080 is about 8480.8065654158. The cubic root of 71924080 is about 415.8704909971.

Adding to 71924080 its reverse (8042917), we get a palindrome (79966997).

The spelling of 71924080 in words is "seventy-one million, nine hundred twenty-four thousand, eighty".